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.
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2302. Iowa in 1838
1830. Iowa. State Planning Board. 1 map ; blue line; 67 x 89 cm Shows development in 1838 in the part of the Iowa Territory that became the state of Iowa.; Includes text and locatio... Iowa. State Planning Board.
2303. Iowa Lake Township
1918. Geo. A. Ogle & Co.
1930. Iowa. State Planning Board. 1 map black line ; 83 x 115 cm Shows state parks, wildlife refuges, and forests. "Iowa state plan.". Iowa. State Planning Board.
1930. Iowa. State Planning Board. 1 map blue line, hand colored ; 84 x 115 cm Shows state parks, wildlife refuges, and forests. Blueline print with hand coloring. "Iowa state plan.". Iowa. State Planning Board.
1920. Iowa. Highway Commission. 1 map. Hugh H. Shepard distributor.
1930. Geological Survey (U.S.). 1 map on 8 sheets Scale 1:250,000. Approximately 1 inch to 4 miles Modified polyconic projection W 96°37′ --W 90°07′ /N 43°30′ --N 40°22′. Bureau of Public Roads.
1930. United States. Bureau of Public Roads. 1 map in 8 sections Scale 1:250,000. Approximately 1 inch to 4 miles Modified polyconic projection W 96°37′--W 90°07′/N 43°30′--N 40°07′. The Bureau.
1940. United States. Public Roads Administration. 1 map in 8 sections Scale 1:250,000. Approximately 1 inch to 4 miles Modified polyconic projection W 96°37′--W 90°07′/N 43°30′--N 40°07′. The Administration.
1930. Iowa. State Planning Board. Water Resources Committee. 1 map black line ; 83 x 114 cm W.P.A. project no. 962. "Iowa state plan.". Iowa. State Planning Board.