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You searched for: Subject Imagery and Base Maps Remove constraint Subject: Imagery and Base Maps Dct Is Part Of Sm Academic Institutions Geospatial Data Remove constraint Dct Is Part Of Sm: Academic Institutions Geospatial Data Time Period 1900-1949 Remove constraint Time Period: 1900-1949
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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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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...