1890. Iowa. State Planning Board. Committee on Population & Social Trends. 1 map black line ; 83 x 115 cm Iowa state plan. "Project no. 1048.". Iowa. State Planning Board.
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1930. Iowa. State Planning Board. Committee on Land Utilization. 1 map black line ; 84 x 114 cm Negative. "Iowa state plan." "Project no. 1030." "1030-21.". Iowa. State Planning Board.
1930. Iowa. State Planning Board. Recreation & Historic Division. 1 map ; black line; 53 x 86 cm Oriented with north to the right.; Relief shown by contours ; contour interval 50 ft. Iowa. State Planning Board.
1930. Iowa. State Planning Board. Farm Tenancy Committee and Hawley, F. K. 63 pages ; 22 cm. Iowa. State Planning Board.
1930. Iowa. State Planning Board. Transportation committee. 11 leaves ; 29 cm. Iowa. State Planning Board.
1930. Iowa. State Planning Board. Transportation Committee. 38 pages ; 29 cm. Iowa. State Planning Board.
1930. Iowa. State Planning Board. Transportation Committee. 40 pages ; 29 cm. Iowa. State Planning Board.
1930. Iowa. Fish and Game Commission and Iowa. State Planning Board. Biological Survey Unit. 1 volume (no pagination) ; 29 cm. Iowa. State Planning Board.
1930. Brown, C. H. and Iowa. State Planning Board. Committee on Public Education. 55 leaves ; 28 cm. Iowa. State Planning Board.
1930. Iowa. State Planning Board and Griffith, W. I. 32 leaves ; 28 cm. Iowa. State Planning Board.