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You searched for: Subject Imagery and Base Maps Remove constraint Subject: Imagery and Base Maps Time Period 1900-1949 Remove constraint Time Period: 1900-1949
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Evansville, Vanderburgh County Open Data Portal

1937-2019. City of Evansville and Vanderburgh County, Indiana GIS. An ArcGIS Open Data Portal for the City of Evansville & Vanderburgh County, Indiana includes a large collection of downloadable geospatial resource...

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GeoDataBase Files Downloads for Montgomery County, Ohio

1936-present. Montgomery County Auditor's Office. Website containing downloadable zip file (large > 1GB) containing all common geospatial datasets. Also contains aerial photography for selected ye...

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Historical Aerial Photography: Illinois, 1937-1947

1936-1941. Illinois State Geological Survey. The primary data set consists of historical black and white aerial photographs from Illinois acquired during 1936 to 1941. Alternative years of pho...

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IowaDOT Open Data

1930-2019. Iowa Department of Transportation. This portal is Iowa Department of Transportation's public platform for exploring and downloading open geospatial data. Topics of available datasets...

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Minnesota Historical Aerial Photographs Online (MHAPO), 1920-2000

1920-2000. John R. Borchert Map Library and Minnesota Department of Natural Resources (MNDNR). Provides access to 121,000 digital copies of non-georeferenced air photos that were captured between 1923 and 2007 and are freely available via the...

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Public FTP for Mahoning County, Ohio

1900-present. Mahoning County GIS Dept. FTP site containing downloadable datasets for parcels, boundaries, addresses, transportation, hydrology, land use, and more. Also contains aerial p...