1930. County plat books from W.W. Hixson & Co. published in 1930 throughout the state of Iowa.
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1930. Sinn, Eugene and Iowa. State Planning Board. Committee on Population and Social Trends. 44 leaves tables ; 29 cm. Iowa. State Planning Board.
1930. Iowa. State Planning Board. Committee on business and industry. 29 leaves ; 28 cm "Project 1040-1041.". Iowa. State Planning Board.
1930. Iowa. State Planning Board. Committee on Transportation. 1 map black line ; 83 x 114 cm Iowa state plan. "Project 1036." "1036-5.". Iowa. State Planning Board.
1930. Iowa. State Planning Board. Committee on Transportation. 1 map black line ; 84 x 114 cm Negative. "Iowa state plan." "Project 1036.". Iowa. State Planning Board.
96. Iowa base map
1930. Iowa. State Planning Board. 1 map black line ; 83 x 115 cm Shows county boundaries and rivers. Negative. "Iowa state plan.". Iowa. State Planning Board.
1930. Iowa. State Planning Board. 1 map black line, plastic ; 85 x 116 cm Shows county and township boundaries and rivers. "Iowa state plan.". Iowa. State Planning Board.
1930. Geological Survey (U.S.). 1 map Scale 1:24,000 Polyconic projection W 91°35′ --W 91°30′ /N 41°41′ 15″--N 41°37′ 30″. U.S. Geological Survey.
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. Iowa. State Planning Board. Committee on Land Utilization. 1 map black line ; 83 x 116 cm Negative. "Iowa state plan." "Project no. 1030.". Iowa. State Planning Board.