(Annotated where possible)
Coy, Owen C., California County Boundries: A Study of the Division of the State into Counties and the Subsequent Changes in Their Boundaries. With Maps. California Historical Survey Commission, Berkeley, 1923.
Coy, Owen C., Guide to the county Archives of California.California County Boundries: California Historical Survey Commission, Sacramento, 1919. (With Maps).
Redwood Genealogical Society, There Really Was ... A Klamath County: 1851-1874. Redwood Genealogical Society, P.O. Box 645, Fortuna, CA 95540, 1984.
Rohde, Jerry, "The President's Place. Illuminating Obscurity: the Lessons of School Road," The Humboldt Historian, Humboldt County Historical Society (P.O. Box 8000, Eureka, CA 95502), Spring 1999, pages 4, 39. A very well written short history of Klamath County.
Scott, Jeremiah R., Jr., "District Attorneys Reflect Diversity of County," The Humboldt Historian, Humboldt County Historical Society (P.O. Box 8000, Eureka, CA 95502), Summer 1999, pages 26-34. Klamath County's first District Attorney, Walter Van Dyke.