1940. Color reproduction by Bureau of Agricultural Economics, U.S.D.A.' Includes chart showing type of land use, acreage, and recommended use. Scale not ... United States Bureau of Agricultural Economics.
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1940. Includes chart showing type of land use, acreage, and recommended use. Scale not given. Prepared by Switzerland County Land Use Planning Committee. The Committee.
1940. Title supplied by cataloger based on information from sheet label. Image is a photoreduction of the mosaic created from original aerial photographs... United States. Department of Agriculture and United States. Agricultural Stabilization and Conservation Service.
1940. Title supplied by cataloger based on information from sheet label. Image is a photoreduction of the mosaic created from original aerial photographs... United States. Department of Agriculture and United States. Agricultural Stabilization and Conservation Service.
1940. Base map from U.S. Geological Survey state map.; Data corrected to May 1, 1940. Scale 1:500,000. 1 inch = 1.789 miles; Modified polyconic projection. The Administration.
1940. Iowa. Department of Transportation. color maps.
1940. Iowa. Department of Transportation. color maps.
1940. Iowa. Department of Transportation. color maps.
1940. Iowa. Department of Transportation. color maps.
1940. Iowa. Department of Transportation. color maps.