1930. Iowa. State Planning Board. Committee on Population Social Trends. 1 map black line ; 84 x 115 cm Negative. "Iowa state plan." "Project 1048." "1048-19.". Iowa. State Planning Board.
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62. Farms with automobiles percentage of farms having automobiles, state average 90.2, by counties 1930
1930. Iowa. State Planning Board. Committee on Population Social Trends. 1 map black line ; 83 x 115 cm Negative. "Iowa state plan." "Project 1048." "1048-14.". Iowa. State Planning Board.
1930. Iowa. State Planning Board. Committee on Population Social Trends. 1 map black line ; 84 x 115 cm Negative. "Iowa state plan." "Project 1048." "1048-18.". Iowa. State Planning Board.
1930. Iowa. State Planning Board. Committee on Population Social Trends. 1 map black line ; 84 x 115 cm Negative. "Iowa state plan." "Project 1048." "1048-17.". Iowa. State Planning Board.
1930. Title supplied by cataloger based on information from sheet labels. Images are photoreductions of mosaics created from original aerial photographs.... United States. Department of Agriculture and United States. Agricultural Stabilization and Conservation Service.
1930. Porter, Florence Ireland and Iowa. State Planning Board. Committee on Population and Social Trends. 13 leaves ; 29 cm. Iowa. State Planning Board.
1930. Iowa. State Planning Board. Health and Housing Committee. 12 leaves ; 29 cm. Iowa. State Planning Board. Health and Housing Committee.
1930. Iowa. State Planning Board. Committee on Land Utilization. 1 map black line ; 84 x 115 cm Negative. "Project 1030." "1030-8.". Iowa. State Planning Board.
1930. Iowa. State Planning Board. Committee on Land Utilization. 1 map black line ; 84 x 114 cm Negative. "Project 1030." "1030-6.". Iowa. State Planning Board.
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.