↑(en) Western historical Company, The History of Linn County, Iowa : Containing a History of the County, Its Cities, Towns, &c., a Biographical Directory of Its Citizens, War Record of Its Volunteers in the Late Rebellion, General and Local Statistics ... History of the Northwest, History of Iowa, Map of Linn County, Constitution of the United States, Miscellaneous Matters, , 798 p., p. 361.
↑(en) Luther Albertus Brewer et Barthinius Larson Wick, History of Linn County Iowa : From Its Earliest Settlement to the Present Time, Pioneer Publishing Company, , p. 285.
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