Kirkham, E. K. (1965). The counties of the United States and their genealogical value: A verified and corrected listing that shows parent county, county seat and census information, for researchers in American genealogy and history (3rd ed.). Salt Lake City: Desert Book Co..

Kirkham, E. Kay. The Counties of the United States and Their Genealogical Value: A Verified and Corrected Listing That Shows Parent County, County Seat and Census Information, for Researchers in American Genealogy and History. 3rd ed. Salt Lake City: Desert Book Co., 1965.

Kirkham, E. Kay. The Counties of the United States and Their Genealogical Value: A Verified and Corrected Listing That Shows Parent County, County Seat and Census Information, for Researchers in American Genealogy and History. 3rd ed. Salt Lake City: Desert Book Co., 1965.