1. Population distribution, urban and rural : in the United States: 1960 Author/Creator: United States. Bureau of the Census Publication/Creation: Washington, D.C. : U.S G.P.O., 1963 Resource Type: Map Access & Availability: Loading
2. Population distribution, urban and rural, in the United States: 1970 Author/Creator: United States. Bureau of the Census Publication/Creation: Washington, D.C. U.S. Government Printing Office, 1973 Resource Type: Map Access & Availability: Loading