{"type":"FeatureCollection","features":[
{"type":"Feature","properties":{"label":"Fremont 1982","title":"Fremont","datePub":"1982","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-471640","websiteUrl":"https://www.sciencebase.gov/catalog/item/5d011a4fe4b0573a18f7890f","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/NE/NE_Fremont_471640_1982_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/NE/100000/NE_Fremont_471640_1982_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-96,41],[-96,41.5],[-97,41.5],[-97,41],[-96,41]]]}},
{"type":"Feature","properties":{"label":"Blair 1986","title":"Blair","datePub":"1986","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-317706","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a38dee4b00f54eb3e0e62","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/NE/NE_Blair_317706_1986_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/NE/100000/NE_Blair_317706_1986_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-96,41.5],[-96,42],[-97,42],[-97,41.5],[-96,41.5]]]}},
{"type":"Feature","properties":{"label":"Blair 1986 (printed 1994)","title":"Blair","datePub":"1986","dateReprnt":"1994","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-317707","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a38dee4b00f54eb3e0e67","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/NE/NE_Blair_317707_1986_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/NE/100000/NE_Blair_317707_1986_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-96,41.5],[-96,42],[-97,42],[-97,41.5],[-96,41.5]]]}},
{"type":"Feature","properties":{"label":"Sioux City South 1986","title":"Sioux City South","datePub":"1986","scale":"1:100,000","publisher":"Tennessee Valley Authority","available":true,"recId":"usgs-htmc-175541","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542fe4b00f54eb411207","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Sioux%20City%20South_175541_1986_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Sioux%20City%20South_175541_1986_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-96,42],[-96,42.5],[-97,42.5],[-97,42],[-96,42]]]}},
{"type":"Feature","properties":{"label":"Sioux City South 1986 (printed 1993)","title":"Sioux City South","datePub":"1986","dateReprnt":"1993","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-175542","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542fe4b00f54eb411210","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Sioux%20City%20South_175542_1986_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Sioux%20City%20South_175542_1986_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-96,42],[-96,42.5],[-97,42.5],[-97,42],[-96,42]]]}},
{"type":"Feature","properties":{"label":"Sioux City North 1986","title":"Sioux City North","datePub":"1986","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-175537","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542ee4b00f54eb4111f7","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Sioux%20City%20North_175537_1986_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Sioux%20City%20North_175537_1986_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-96,42.5],[-96,43],[-97,43],[-97,42.5],[-96,42.5]]]}},
{"type":"Feature","properties":{"label":"Sioux City North 1986 (printed 1992)","title":"Sioux City North","datePub":"1986","dateReprnt":"1992","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-175538","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542ee4b00f54eb411200","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Sioux%20City%20North_175538_1986_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Sioux%20City%20North_175538_1986_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-96,42.5],[-96,43],[-97,43],[-97,42.5],[-96,42.5]]]}},
{"type":"Feature","properties":{"label":"Rock Rapids 1985","title":"Rock Rapids","datePub":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-175438","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542ee4b00f54eb4111e9","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Rock%20Rapids_175438_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Rock%20Rapids_175438_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-96,43],[-96,43.5],[-97,43.5],[-97,43],[-96,43]]]}},
{"type":"Feature","properties":{"label":"Rock Rapids 1985 (printed 1989)","title":"Rock Rapids","datePub":"1985","dateReprnt":"1989","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-344715","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542ee4b00f54eb4111f1","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Rock%20Rapids_344715_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Rock%20Rapids_344715_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-96,43],[-96,43.5],[-97,43.5],[-97,43],[-96,43]]]}},
{"type":"Feature","properties":{"label":"Sioux Falls 1985","title":"Sioux Falls","datePub":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-344717","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a23a7e4b00f54eb3bde8f","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/SD/SD_Sioux%20Falls_344717_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/SD/100000/SD_Sioux%20Falls_344717_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-96,43.5],[-96,44],[-97,44],[-97,43.5],[-96,43.5]]]}},
{"type":"Feature","properties":{"label":"Sioux Falls 1985 (printed 1990)","title":"Sioux Falls","datePub":"1985","dateReprnt":"1990","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-9475963","websiteUrl":"https://www.sciencebase.gov/catalog/item/6610ad1ad34e63346650e1c9","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/SD/SD_Sioux%20Falls_9475963_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/SD/100000/SD_Sioux%20Falls_9475963_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-96,43.5],[-96,44],[-97,44],[-97,43.5],[-96,43.5]]]}},
{"type":"Feature","properties":{"label":"Nebraska City 1985","title":"Nebraska City","datePub":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-317749","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a38eae4b00f54eb3e0fe5","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/NE/NE_Nebraska%20City_317749_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/NE/100000/NE_Nebraska%20City_317749_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-95,40.5],[-95,41],[-96,41],[-96,40.5],[-95,40.5]]]}},
{"type":"Feature","properties":{"label":"Nebraska City 1993","title":"Nebraska City","datePub":"1993","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-317750","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a38ebe4b00f54eb3e0fea","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/NE/NE_Nebraska%20City_317750_1993_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/NE/100000/NE_Nebraska%20City_317750_1993_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-95,40.5],[-95,41],[-96,41],[-96,40.5],[-95,40.5]]]}},
{"type":"Feature","properties":{"label":"Omaha 1985","title":"Omaha","datePub":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-317756","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a38ede4b00f54eb3e1012","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/NE/NE_Omaha_317756_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/NE/100000/NE_Omaha_317756_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-95,41],[-95,41.5],[-96,41.5],[-96,41],[-95,41]]]}},
{"type":"Feature","properties":{"label":"Omaha 1985 (printed 1993)","title":"Omaha","datePub":"1985","dateReprnt":"1993","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-317757","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a38eee4b00f54eb3e101a","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/NE/NE_Omaha_317757_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/NE/100000/NE_Omaha_317757_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-95,41],[-95,41.5],[-96,41.5],[-96,41],[-95,41]]]}},
{"type":"Feature","properties":{"label":"Harlan 1980","title":"Harlan","datePub":"1980","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174795","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5429e4b00f54eb411154","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Harlan_174795_1980_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Harlan_174795_1980_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-95,41.5],[-95,42],[-96,42],[-96,41.5],[-95,41.5]]]}},
{"type":"Feature","properties":{"label":"Ida Grove 1985","title":"Ida Grove","datePub":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174848","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5429e4b00f54eb41115a","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Ida%20Grove_174848_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Ida%20Grove_174848_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-95,42],[-95,42.5],[-96,42.5],[-96,42],[-95,42]]]}},
{"type":"Feature","properties":{"label":"Ida Grove 1985 (printed 1993)","title":"Ida Grove","datePub":"1985","dateReprnt":"1993","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174849","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5429e4b00f54eb41115c","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Ida%20Grove_174849_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Ida%20Grove_174849_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-95,42],[-95,42.5],[-96,42.5],[-96,42],[-95,42]]]}},
{"type":"Feature","properties":{"label":"Storm Lake 1985","title":"Storm Lake","datePub":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-468750","websiteUrl":"https://www.sciencebase.gov/catalog/item/604ea098d34eb1203120324d","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Storm%20Lake_468750_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Storm%20Lake_468750_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-95,42.5],[-95,43],[-96,43],[-96,42.5],[-95,42.5]]]}},
{"type":"Feature","properties":{"label":"Storm Lake 1985 (printed 1993)","title":"Storm Lake","datePub":"1985","dateReprnt":"1993","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-175592","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542fe4b00f54eb411221","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Storm%20Lake_175592_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Storm%20Lake_175592_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-95,42.5],[-95,43],[-96,43],[-96,42.5],[-95,42.5]]]}},
{"type":"Feature","properties":{"label":"Iowa Great Lakes 1985","title":"Iowa Great Lakes","datePub":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174890","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542ae4b00f54eb41116d","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Iowa%20Great%20Lakes_174890_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Iowa%20Great%20Lakes_174890_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-95,43],[-95,43.5],[-96,43.5],[-96,43],[-95,43]]]}},
{"type":"Feature","properties":{"label":"Iowa Great Lakes 1985 (printed 1993)","title":"Iowa Great Lakes","datePub":"1985","dateReprnt":"1993","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174891","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542ae4b00f54eb411171","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Iowa%20Great%20Lakes_174891_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Iowa%20Great%20Lakes_174891_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-95,43],[-95,43.5],[-96,43.5],[-96,43],[-95,43]]]}},
{"type":"Feature","properties":{"label":"Worthington 1985","title":"Worthington","datePub":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-471306","websiteUrl":"https://www.sciencebase.gov/catalog/item/5db0711de4b0b0c58b56c367","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/MN/MN_Worthington_471306_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/MN/100000/MN_Worthington_471306_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-95,43.5],[-95,44],[-96,44],[-96,43.5],[-95,43.5]]]}},
{"type":"Feature","properties":{"label":"Worthington 1985 (printed 1994)","title":"Worthington","datePub":"1985","dateReprnt":"1994","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-805937","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a3ee9e4b00f54eb3eacf6","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/MN/MN_Worthington_805937_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/MN/100000/MN_Worthington_805937_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-95,43.5],[-95,44],[-96,44],[-96,43.5],[-95,43.5]]]}},
{"type":"Feature","properties":{"label":"Mount Ayr 1985","title":"Mount Ayr","datePub":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-175210","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542be4b00f54eb411191","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Mount%20Ayr_175210_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Mount%20Ayr_175210_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-94,40.5],[-94,41],[-95,41],[-95,40.5],[-94,40.5]]]}},
{"type":"Feature","properties":{"label":"Mount Ayr 1985 (printed 1990)","title":"Mount Ayr","datePub":"1985","dateReprnt":"1990","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-468889","websiteUrl":"https://www.sciencebase.gov/catalog/item/5d8f37d9e4b0c4f70d0cd77d","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Mount%20Ayr_468889_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Mount%20Ayr_468889_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-94,40.5],[-94,41],[-95,41],[-95,40.5],[-94,40.5]]]}},
{"type":"Feature","properties":{"label":"Creston 1985","title":"Creston","datePub":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-468726","websiteUrl":"https://www.sciencebase.gov/catalog/item/604ea090d34eb12031203242","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Creston_468726_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Creston_468726_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-94,41],[-94,41.5],[-95,41.5],[-95,41],[-94,41]]]}},
{"type":"Feature","properties":{"label":"Creston 1993","title":"Creston","datePub":"1993","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174403","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5427e4b00f54eb411125","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Creston_174403_1993_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Creston_174403_1993_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-94,41],[-94,41.5],[-95,41.5],[-95,41],[-94,41]]]}},
{"type":"Feature","properties":{"label":"Guthrie Center 1984 (printed 1985)","title":"Guthrie Center","datePub":"1984","dateReprnt":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174777","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5429e4b00f54eb411150","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Guthrie%20Center_174777_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Guthrie%20Center_174777_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-94,41.5],[-94,42],[-95,42],[-95,41.5],[-94,41.5]]]}},
{"type":"Feature","properties":{"label":"Guthrie Center 1993","title":"Guthrie Center","datePub":"1993","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174778","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5429e4b00f54eb411152","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Guthrie%20Center_174778_1993_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Guthrie%20Center_174778_1993_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-94,41.5],[-94,42],[-95,42],[-95,41.5],[-94,41.5]]]}},
{"type":"Feature","properties":{"label":"Carroll 1985","title":"Carroll","datePub":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174246","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5426e4b00f54eb41110f","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Carroll_174246_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Carroll_174246_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-94,42],[-94,42.5],[-95,42.5],[-95,42],[-94,42]]]}},
{"type":"Feature","properties":{"label":"Carroll 1993","title":"Carroll","datePub":"1993","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174247","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5426e4b00f54eb411114","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Carroll_174247_1993_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Carroll_174247_1993_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-94,42],[-94,42.5],[-95,42.5],[-95,42],[-94,42]]]}},
{"type":"Feature","properties":{"label":"Humboldt 1984 (printed 1985)","title":"Humboldt","datePub":"1984","dateReprnt":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174840","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5429e4b00f54eb411156","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Humboldt_174840_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Humboldt_174840_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-94,42.5],[-94,43],[-95,43],[-95,42.5],[-94,42.5]]]}},
{"type":"Feature","properties":{"label":"Humboldt 1984 (printed 1992)","title":"Humboldt","datePub":"1984","dateReprnt":"1992","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174841","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5429e4b00f54eb411158","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Humboldt_174841_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Humboldt_174841_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-94,42.5],[-94,43],[-95,43],[-95,42.5],[-94,42.5]]]}},
{"type":"Feature","properties":{"label":"Estherville 1985","title":"Estherville","datePub":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174628","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5428e4b00f54eb411148","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Estherville_174628_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Estherville_174628_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-94,43],[-94,43.5],[-95,43.5],[-95,43],[-94,43]]]}},
{"type":"Feature","properties":{"label":"Estherville 1985 (printed 1993)","title":"Estherville","datePub":"1985","dateReprnt":"1993","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174629","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5428e4b00f54eb41114a","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Estherville_174629_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Estherville_174629_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-94,43],[-94,43.5],[-95,43.5],[-95,43],[-94,43]]]}},
{"type":"Feature","properties":{"label":"Fairmont 1985 (printed 1991)","title":"Fairmont","datePub":"1985","dateReprnt":"1991","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-805648","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a3ed3e4b00f54eb3eab67","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/MN/MN_Fairmont_805648_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/MN/100000/MN_Fairmont_805648_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-94,43.5],[-94,44],[-95,44],[-95,43.5],[-94,43.5]]]}},
{"type":"Feature","properties":{"label":"Leon 1981 (printed 1982)","title":"Leon","datePub":"1981","dateReprnt":"1982","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-175005","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542ae4b00f54eb41117d","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Leon_175005_1981_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Leon_175005_1981_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-93,40.5],[-93,41],[-94,41],[-94,40.5],[-93,40.5]]]}},
{"type":"Feature","properties":{"label":"Indianola 1984","title":"Indianola","datePub":"1984","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174862","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5429e4b00f54eb41115e","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Indianola_174862_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Indianola_174862_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-93,41],[-93,41.5],[-94,41.5],[-94,41],[-93,41]]]}},
{"type":"Feature","properties":{"label":"Des Moines 1984 (printed 1985)","title":"Des Moines","datePub":"1984","dateReprnt":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174509","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5428e4b00f54eb411139","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Des%20Moines_174509_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Des%20Moines_174509_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-93,41.5],[-93,42],[-94,42],[-94,41.5],[-93,41.5]]]}},
{"type":"Feature","properties":{"label":"Des Moines 1984 (printed 1992)","title":"Des Moines","datePub":"1984","dateReprnt":"1992","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-468760","websiteUrl":"https://www.sciencebase.gov/catalog/item/604ea092d34eb12031203244","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Des%20Moines_468760_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Des%20Moines_468760_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-93,41.5],[-93,42],[-94,42],[-94,41.5],[-93,41.5]]]}},
{"type":"Feature","properties":{"label":"Ames 1985","title":"Ames","datePub":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174061","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5425e4b00f54eb4110f2","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Ames_174061_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Ames_174061_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-93,42],[-93,42.5],[-94,42.5],[-94,42],[-93,42]]]}},
{"type":"Feature","properties":{"label":"Ames 1993","title":"Ames","datePub":"1993","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174062","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5425e4b00f54eb4110f8","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Ames_174062_1993_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Ames_174062_1993_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-93,42],[-93,42.5],[-94,42.5],[-94,42],[-93,42]]]}},
{"type":"Feature","properties":{"label":"Iowa Falls 1984 (printed 1985)","title":"Iowa Falls","datePub":"1984","dateReprnt":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174888","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542ae4b00f54eb411165","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Iowa%20Falls_174888_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Iowa%20Falls_174888_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-93,42.5],[-93,43],[-94,43],[-94,42.5],[-93,42.5]]]}},
{"type":"Feature","properties":{"label":"Iowa Falls 1984 (printed 1993)","title":"Iowa Falls","datePub":"1984","dateReprnt":"1993","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174889","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542ae4b00f54eb411169","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Iowa%20Falls_174889_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Iowa%20Falls_174889_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-93,42.5],[-93,43],[-94,43],[-94,42.5],[-93,42.5]]]}},
{"type":"Feature","properties":{"label":"Mason City 1985","title":"Mason City","datePub":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-175114","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542be4b00f54eb41118a","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Mason%20City_175114_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Mason%20City_175114_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-93,43],[-93,43.5],[-94,43.5],[-94,43],[-93,43]]]}},
{"type":"Feature","properties":{"label":"Mason City 1985 (printed 1992)","title":"Mason City","datePub":"1985","dateReprnt":"1992","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-175115","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542be4b00f54eb41118d","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Mason%20City_175115_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Mason%20City_175115_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-93,43],[-93,43.5],[-94,43.5],[-94,43],[-93,43]]]}},
{"type":"Feature","properties":{"label":"Centerville 1981 (printed 1982)","title":"Centerville","datePub":"1981","dateReprnt":"1982","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174286","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5426e4b00f54eb411118","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Centerville_174286_1981_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Centerville_174286_1981_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-92,40.5],[-92,41],[-93,41],[-93,40.5],[-92,40.5]]]}},
{"type":"Feature","properties":{"label":"Oskaloosa 1982","title":"Oskaloosa","datePub":"1982","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-468747","websiteUrl":"https://www.sciencebase.gov/catalog/item/5ae65e11e4b0e2c2dd33e90a","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Oskaloosa_468747_1982_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Oskaloosa_468747_1982_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-92,41],[-92,41.5],[-93,41.5],[-93,41],[-92,41]]]}},
{"type":"Feature","properties":{"label":"Grinnell 1984 (printed 1985)","title":"Grinnell","datePub":"1984","dateReprnt":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174767","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5429e4b00f54eb41114c","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Grinnell_174767_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Grinnell_174767_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-92,41.5],[-92,42],[-93,42],[-93,41.5],[-92,41.5]]]}},
{"type":"Feature","properties":{"label":"Grinnell 1984 (printed 1989)","title":"Grinnell","datePub":"1984","dateReprnt":"1989","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174768","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5429e4b00f54eb41114e","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Grinnell_174768_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Grinnell_174768_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-92,41.5],[-92,42],[-93,42],[-93,41.5],[-92,41.5]]]}},
{"type":"Feature","properties":{"label":"Marshalltown 1984 (printed 1985)","title":"Marshalltown","datePub":"1984","dateReprnt":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-175101","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542be4b00f54eb411181","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Marshalltown_175101_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Marshalltown_175101_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-92,42],[-92,42.5],[-93,42.5],[-93,42],[-92,42]]]}},
{"type":"Feature","properties":{"label":"Marshalltown 1984 (printed 1989)","title":"Marshalltown","datePub":"1984","dateReprnt":"1989","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-175102","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542be4b00f54eb411185","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Marshalltown_175102_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Marshalltown_175102_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-92,42],[-92,42.5],[-93,42.5],[-93,42],[-92,42]]]}},
{"type":"Feature","properties":{"label":"Waverly 1984 (printed 1985)","title":"Waverly","datePub":"1984","dateReprnt":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-175723","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542fe4b00f54eb41122b","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Waverly_175723_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Waverly_175723_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-92,42.5],[-92,43],[-93,43],[-93,42.5],[-92,42.5]]]}},
{"type":"Feature","properties":{"label":"Waverly 1984 (printed 1989)","title":"Waverly","datePub":"1984","dateReprnt":"1989","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-175724","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542fe4b00f54eb411235","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Waverly_175724_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Waverly_175724_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-92,42.5],[-92,43],[-93,43],[-93,42.5],[-92,42.5]]]}},
{"type":"Feature","properties":{"label":"Charles City 1985","title":"Charles City","datePub":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174296","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5426e4b00f54eb41111d","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Charles%20City_174296_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Charles%20City_174296_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-92,43],[-92,43.5],[-93,43.5],[-93,43],[-92,43]]]}},
{"type":"Feature","properties":{"label":"Charles City 1985 (printed 1990)","title":"Charles City","datePub":"1985","dateReprnt":"1990","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174297","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5427e4b00f54eb411121","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Charles%20City_174297_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Charles%20City_174297_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-92,43],[-92,43.5],[-93,43.5],[-93,43],[-92,43]]]}},
{"type":"Feature","properties":{"label":"Austin 1985","title":"Austin","datePub":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-805570","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a3ecee4b00f54eb3eab00","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/MN/MN_Austin_805570_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/MN/100000/MN_Austin_805570_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-92,43.5],[-92,44],[-93,44],[-93,43.5],[-92,43.5]]]}},
{"type":"Feature","properties":{"label":"Austin 1985 (printed 1989)","title":"Austin","datePub":"1985","dateReprnt":"1989","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-471145","websiteUrl":"https://www.sciencebase.gov/catalog/item/604ebae1d34eb12031203efe","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/MN/MN_Austin_471145_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/MN/100000/MN_Austin_471145_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-92,43.5],[-92,44],[-93,44],[-93,43.5],[-92,43.5]]]}},
{"type":"Feature","properties":{"label":"Keokuk 1986","title":"Keokuk","datePub":"1986","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174922","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542ae4b00f54eb411179","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Keokuk_174922_1986_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Keokuk_174922_1986_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-91,40],[-91,40.5],[-92,40.5],[-92,40],[-91,40]]]}},
{"type":"Feature","properties":{"label":"Keokuk 1986 (printed 1989)","title":"Keokuk","datePub":"1986","dateReprnt":"1989","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174921","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542ae4b00f54eb411175","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Keokuk_174921_1986_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Keokuk_174921_1986_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-91,40],[-91,40.5],[-92,40.5],[-92,40],[-91,40]]]}},
{"type":"Feature","properties":{"label":"Burlington 1985","title":"Burlington","datePub":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174217","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5425e4b00f54eb411106","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Burlington_174217_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Burlington_174217_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-91,40.5],[-91,41],[-92,41],[-92,40.5],[-91,40.5]]]}},
{"type":"Feature","properties":{"label":"Burlington 1985 (printed 1989)","title":"Burlington","datePub":"1985","dateReprnt":"1989","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174218","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5426e4b00f54eb41110a","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Burlington_174218_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Burlington_174218_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-91,40.5],[-91,41],[-92,41],[-92,40.5],[-91,40.5]]]}},
{"type":"Feature","properties":{"label":"Muscatine 1984 (printed 1985)","title":"Muscatine","datePub":"1984","dateReprnt":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-175225","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542be4b00f54eb411194","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Muscatine_175225_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Muscatine_175225_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-91,41],[-91,41.5],[-92,41.5],[-92,41],[-91,41]]]}},
{"type":"Feature","properties":{"label":"Muscatine 1984 (printed 1989)","title":"Muscatine","datePub":"1984","dateReprnt":"1989","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-310125","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542be4b00f54eb411197","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Muscatine_310125_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Muscatine_310125_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-91,41],[-91,41.5],[-92,41.5],[-92,41],[-91,41]]]}},
{"type":"Feature","properties":{"label":"Iowa City 1984 (printed 1985)","title":"Iowa City","datePub":"1984","dateReprnt":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-468876","websiteUrl":"https://www.sciencebase.gov/catalog/item/5d8f37d7e4b0c4f70d0cd77b","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Iowa%20City_468876_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Iowa%20City_468876_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-91,41.5],[-91,42],[-92,42],[-92,41.5],[-91,41.5]]]}},
{"type":"Feature","properties":{"label":"Iowa City 1984 (printed 1989)","title":"Iowa City","datePub":"1984","dateReprnt":"1989","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174885","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542ae4b00f54eb411161","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Iowa%20City_174885_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Iowa%20City_174885_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-91,41.5],[-91,42],[-92,42],[-92,41.5],[-91,41.5]]]}},
{"type":"Feature","properties":{"label":"Anamosa 1984 (printed 1985)","title":"Anamosa","datePub":"1984","dateReprnt":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174074","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5425e4b00f54eb4110fd","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Anamosa_174074_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Anamosa_174074_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-91,42],[-91,42.5],[-92,42.5],[-92,42],[-91,42]]]}},
{"type":"Feature","properties":{"label":"Anamosa 1984 (printed 1988)","title":"Anamosa","datePub":"1984","dateReprnt":"1988","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174075","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5425e4b00f54eb411101","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Anamosa_174075_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Anamosa_174075_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-91,42],[-91,42.5],[-92,42.5],[-92,42],[-91,42]]]}},
{"type":"Feature","properties":{"label":"Oelwein 1984 (printed 1985)","title":"Oelwein","datePub":"1984","dateReprnt":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-175289","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542ee4b00f54eb4111e0","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Oelwein_175289_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Oelwein_175289_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-91,42.5],[-91,43],[-92,43],[-92,42.5],[-91,42.5]]]}},
{"type":"Feature","properties":{"label":"Oelwein 1984 (printed 1989)","title":"Oelwein","datePub":"1984","dateReprnt":"1989","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-175288","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a542be4b00f54eb41119b","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Oelwein_175288_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Oelwein_175288_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-91,42.5],[-91,43],[-92,43],[-92,42.5],[-91,42.5]]]}},
{"type":"Feature","properties":{"label":"Decorah 1985","title":"Decorah","datePub":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174465","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5427e4b00f54eb411131","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Decorah_174465_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Decorah_174465_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-91,43],[-91,43.5],[-92,43.5],[-92,43],[-91,43]]]}},
{"type":"Feature","properties":{"label":"Decorah 1985 (printed 1989)","title":"Decorah","datePub":"1985","dateReprnt":"1989","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174466","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5428e4b00f54eb411135","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Decorah_174466_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Decorah_174466_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-91,43],[-91,43.5],[-92,43.5],[-92,43],[-91,43]]]}},
{"type":"Feature","properties":{"label":"Galesburg 1985 (printed 1986)","title":"Galesburg","datePub":"1985","dateReprnt":"1986","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-468451","websiteUrl":"https://www.sciencebase.gov/catalog/item/5ea4162a82cefae35a1d6fa5","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IL/IL_Galesburg_468451_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IL/100000/IL_Galesburg_468451_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-90,40.5],[-90,41],[-91,41],[-91,40.5],[-90,40.5]]]}},
{"type":"Feature","properties":{"label":"Galesburg 1985 (printed 1988)","title":"Galesburg","datePub":"1985","dateReprnt":"1988","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-310111","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a3900e4b00f54eb3e1226","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IL/IL_Galesburg_310111_1985_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IL/100000/IL_Galesburg_310111_1985_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-90,40.5],[-90,41],[-91,41],[-91,40.5],[-90,40.5]]]}},
{"type":"Feature","properties":{"label":"Galesburg 1989","title":"Galesburg","datePub":"1989","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-310112","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a3900e4b00f54eb3e122b","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IL/IL_Galesburg_310112_1989_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IL/100000/IL_Galesburg_310112_1989_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-90,40.5],[-90,41],[-91,41],[-91,40.5],[-90,40.5]]]}},
{"type":"Feature","properties":{"label":"Aledo 1984 (printed 1985)","title":"Aledo","datePub":"1984","dateReprnt":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-310093","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a38fee4b00f54eb3e11b4","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IL/IL_Aledo_310093_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IL/100000/IL_Aledo_310093_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-90,41],[-90,41.5],[-91,41.5],[-91,41],[-90,41]]]}},
{"type":"Feature","properties":{"label":"Aledo 1989","title":"Aledo","datePub":"1989","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-310094","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a38fee4b00f54eb3e11b8","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IL/IL_Aledo_310094_1989_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IL/100000/IL_Aledo_310094_1989_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-90,41],[-90,41.5],[-91,41.5],[-91,41],[-90,41]]]}},
{"type":"Feature","properties":{"label":"Davenport 1984 (printed 1985)","title":"Davenport","datePub":"1984","dateReprnt":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174439","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5427e4b00f54eb411129","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Davenport_174439_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Davenport_174439_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-90,41.5],[-90,42],[-91,42],[-91,41.5],[-90,41.5]]]}},
{"type":"Feature","properties":{"label":"Davenport 1984 (printed 1989)","title":"Davenport","datePub":"1984","dateReprnt":"1989","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174440","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5427e4b00f54eb41112d","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Davenport_174440_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Davenport_174440_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-90,41.5],[-90,42],[-91,42],[-91,41.5],[-90,41.5]]]}},
{"type":"Feature","properties":{"label":"Dubuque South 1984 (printed 1985)","title":"Dubuque South","datePub":"1984","dateReprnt":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-468763","websiteUrl":"https://www.sciencebase.gov/catalog/item/5d8f37d6e4b0c4f70d0cd779","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Dubuque%20South_468763_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Dubuque%20South_468763_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-90,42],[-90,42.5],[-91,42.5],[-91,42],[-90,42]]]}},
{"type":"Feature","properties":{"label":"Dubuque South 1984 (printed 1988)","title":"Dubuque South","datePub":"1984","dateReprnt":"1988","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174548","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5428e4b00f54eb411144","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Dubuque%20South_174548_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Dubuque%20South_174548_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-90,42],[-90,42.5],[-91,42.5],[-91,42],[-90,42]]]}},
{"type":"Feature","properties":{"label":"Dubuque South 1984 (printed 1989)","title":"Dubuque South","datePub":"1984","dateReprnt":"1989","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174547","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5428e4b00f54eb411142","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Dubuque%20South_174547_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Dubuque%20South_174547_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-90,42],[-90,42.5],[-91,42.5],[-91,42],[-90,42]]]}},
{"type":"Feature","properties":{"label":"Dubuque South 1984 (printed 1991)","title":"Dubuque South","datePub":"1984","dateReprnt":"1991","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174549","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5428e4b00f54eb411146","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Dubuque%20South_174549_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Dubuque%20South_174549_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-90,42],[-90,42.5],[-91,42.5],[-91,42],[-90,42]]]}},
{"type":"Feature","properties":{"label":"Dubuque North 1984 (printed 1985)","title":"Dubuque North","datePub":"1984","dateReprnt":"1985","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174542","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5428e4b00f54eb41113b","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Dubuque%20North_174542_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Dubuque%20North_174542_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-90,42.5],[-90,43],[-91,43],[-91,42.5],[-90,42.5]]]}},
{"type":"Feature","properties":{"label":"Dubuque North 1984 (printed 1989)","title":"Dubuque North","datePub":"1984","dateReprnt":"1989","scale":"1:100,000","publisher":"U.S. Geological Survey","available":true,"recId":"usgs-htmc-174543","websiteUrl":"https://www.sciencebase.gov/catalog/item/5a8a5428e4b00f54eb411140","download":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/GeoTIFF/IA/IA_Dubuque%20North_174543_1984_100000_geo.tif","thumbUrl":"https://prd-tnm.s3.amazonaws.com/StagedProducts/Maps/HistoricalTopo/PDF/IA/100000/IA_Dubuque%20North_174543_1984_100000_tn.jpg"},"geometry":{"type":"Polygon","coordinates":[[[-90,42.5],[-90,43],[-91,43],[-91,42.5],[-90,42.5]]]}}
]}