Clay CountyHistory of Western Iowa, its settlement and growth. A comprehensive compilation of progressive events concerning the counties, cities, towns, and villages--biographical sketches of the pioneers and business men, with an authentic history of the state of Iowa. Sioux City: Western Publishing Company, 1882. - all bios online*
The History of Clay County, Iowa...by W. C. Gilbreath. [Dubuque?: Smith, Mathis, 1889?]. - many bios online*
History of Clay County, from Its Earliest Settlement to 1909, by Samuel Gillespie and J. E. Steele. Chicago: S. J. Clarke Pub. Co., 1909. - index, 30 bios online
Remember When...by Don Buchan. [Spencer: N.p.], 1964.