Cook County, 1941: Aerial photography index
MLA
United States. Agricultural Stabilization and Conservation Service. Aerial Photography Division. "Cook County, 1941: Aerial photography index." University of Georgia. Map and Government Information Library. 1941, https://dlg.usg.edu/record/gyca_gaphind_cook-1941#item.
APA
United States. Agricultural Stabilization and Conservation Service. Aerial Photography Division (1941). Cook County, 1941: Aerial photography index. Retrieved from https://dlg.usg.edu/record/gyca_gaphind_cook-1941#item
Chicago
United States. Agricultural Stabilization and Conservation Service. Aerial Photography Division. "Cook County, 1941: Aerial photography index." 1941. February 26, 2026. https://dlg.usg.edu/record/gyca_gaphind_cook-1941#item.
