1930. Iowa. State Planning Board. Committee on Land Purchase & Mortgage. 1 map black line ; 84 x 115 cm Iowa state plan. "Project no. 1031.". Iowa. State Planning Board.
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1920. Iowa. State Planning Board. Committee on Land Purchase & Mortgage. 1 map black line ; 84 x 115 cm Iowa state plan. "Project no. 1031.". Iowa. State Planning Board.
1930. Iowa. State Planning Board. Committee on Land Purchase & Mortgage. 1 map black line ; 84 x 114 cm Iowa state plan. "Project no. 1031.". Iowa. State Planning Board.
1930. Iowa. State Planning Board. Committee on Land Purchase & Mortgage. 1 map black line ; 71 x 110 cm Iowa state plan. "Project no. 1031.". Iowa. State Planning Board.
1930. Iowa. State Planning Board. Committee on Land Purchase & Mortgage. 1 map ; black line; 84 x 115 cm Negative.; "Iowa state plan."; "Project 1031."; "1031-7.". Iowa. State Planning Board.
1930. Iowa. State Planning Board. Committee on Land Purchase & Mortgage. 1 map ; black line; 83 x 114 cm Iowa state plan.; "Project 1031.". Iowa. State Planning Board.