1. Estimates of the population of Delaware counties Publication/Creation: For sale by the Supt. of Docs. U.S. G.P.O.. Resource Type: Journal, Newspaper or Serial Access & Availability: Loading
2. Estimates of the population of Delaware counties and metropolitan areas, July 1, 1981, 1982, and 1983 Publication/Creation: Washington, D.C. : U.S. Dept. of Commerce, Bureau of the Census, [1985] Resource Type: Book Access & Availability: Loading
3. Estimates of the population of Delaware counties and metropolitan areas, July 1, 1981 to 1985 Publication/Creation: [Washington, D.C.] : U.S. Dept. of Commerce, Bureau of the Census, 1987 Resource Type: Book Access & Availability: Loading