1930. Iowa. Department of Transportation. color map.
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1930. Iowa. Department of Transportation. color map.
1930. Iowa. Department of Transportation. color map.
1930. Iowa. Department of Transportation. color maps.
1930. 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.
1930. University of Iowa. 19 × 32 cm. University of Iowa.
1930. University of Iowa. 19 × 32 cm. University of Iowa.
1930. University of Iowa. 19 × 32 cm. University of Iowa.
1930. University of Iowa. 19 × 32 cm. University of Iowa.
1930. University of Iowa. 19 × 32 cm. University of Iowa.