Mechem, Kirke, Malin, James Claude, Kansas State Historical Society, Volume 20, Kansas Historical Collections 1952-1953, Topeka, Kansas, Consultado el 10 de marzo de 2013
Sargent, Charles Sprague, Garden and Forest, Volume 7, Garden and Forest Publishing Company, 1894, page 7, OCLC43291639, accessed 10 March 2013, Quote: "He rarely went out, except to the store of his publishers under the Astor House; he never went to the theatre, or, indeed, to any place of amusement.
Gregg, Josiah (1844). Commerce of the Prairies. New York: Henry G. Langley. pp. Two volumes, 320 pp. and 318 pp.
Sargent, Charles Sprague, Garden and Forest, Volume 7, Garden and Forest Publishing Company, 1894, page 7, OCLC43291639, accessed 10 March 2013, Quote: "He rarely went out, except to the store of his publishers under the Astor House; he never went to the theatre, or, indeed, to any place of amusement.