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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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Historical Aerial Photography: Illinois, 1937-1947 illinois

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...