1. Idaho Author/Creator: United States. Bureau of the Census. Geography Division Publication/Creation: Washington, D.C. : U.S. Dept. of Commerce, Bureau of the Census, [1983] Resource Type: Map Access & Availability: Loading
2. Illinois Author/Creator: United States. Bureau of the Census. Geography Division Publication/Creation: [Washington, D.C.] : [U.S. Dept. of Commerce, Bureau of the Census], [1980?]] Resource Type: Map Access & Availability: Loading
3. Indiana Author/Creator: United States. Bureau of the Census. Geography Division Publication/Creation: Washington, D.C. : U.S. Dept. of Commerce, Bureau of the Census, [1983] Resource Type: Map Access & Availability: Loading
4. Iowa Author/Creator: United States. Bureau of the Census. Geography Division Publication/Creation: Washington, D.C. : U.S. Dept. of Commerce, Bureau of the Census, [1983] Resource Type: Map Access & Availability: Loading