William J. Moir, Past and Present of Hardin County, Iowa, Iowa, Unigraphic, (lire en ligne), p. 334
History of Hardin County, Iowa, Together with Sketches of Its Towns, Villages and Townships, Educational, Civil, Military and Political History; Portraits of Prominent Persons, and Biographies of Representative Citizens : History of Iowa, Embracing Accounts of the Prehistoric Races, and a Brief Review of Its Civil, Political and Military History, vol. 1, Union Publishing Company, , 984 p. (lire en ligne), p. 577
