Washington For Further Reading


 * Abbott, Newton Carl, and Fred E. Carver; compiled by J. W. Helm. Evolution of Washington Counties. [S.l.] : Yakima Valley Genealogical Society &amp; Klickitat County Historical Society, 1978. ; WorldCat entry for 2000 ed.


 * Eichholz, Alice, ed. Red Book: American State, County, and Town Sources. 3rd ed. Provo, Utah: Ancestry, 2004. Free online version; ; WorldCat entry. Contains bibliographies and background information on history and ethnic groups. Also contains maps and tables showing when each county was created.