"Color reproduction by Bureau of Agricultural Economics, U.S.D.A." "7-31-41". Includes chart showing type of land use, acreage, and recommended use., Imprint: [Washington, D.C.?] : U.S. Bureau of Agricultural Economics, [1941], Dimensions: 18 x 26 cm, on sheet 38 x 28 cm; Scale: Scale not given., Coordinates: W0875917 W0871856 N0383200 N0380955
Gibson County (Ind.). Land Use Planning Committee (1941). Gibson County [Indiana] preliminary land use map. United States. Bureau of Agricultural Economics. https://purl.dlib.indiana.edu/iudl/images/VAC3073/VAC3073-M-00705 (map)