アダムス郡区 (アイオワ州ダラス郡)
↑ The History of Dallas County, Iowa: Containing a History of the County, Its Cities, Towns, &c. Higginson Book Company. (1879). pp. 507. https://books.google.com/books?id=k1E0AQAAMAAJ&pg=PA507#v=onepage&q&f=false