1. Metropolitan areas (MSAs, CMSAs, and PMSAs) June 30, 1990 Author/Creator: United States. Bureau of the Census. Geography Division Publication/Creation: [Washington, D.C.] : The Bureau : For sale by the Supt. of Docs., U.S. G.P.O., 1990 Resource Type: Map Access & Availability: Loading
2. Metropolitan statistical areas : (CMSAs, PMSAs, and MSAs) June 30, 1988 Author/Creator: United States. Bureau of the Census. Geography Division Publication/Creation: For sale by the Supt. of Docs., U.S. G.P.O.. Resource Type: Map Access & Availability: Loading
3. Metropolitan statistical areas (CMSAs, PSMAs, and MSAs) June 30, 1985 Author/Creator: United States. Bureau of the Census. Geography Division Publication/Creation: Washington, D.C. : The Geography Division, 1985 Resource Type: Map Access & Availability: Loading