Ives to Brother, July 19, 1868, box 6, f. 3, Ives Papers.
Ives to G. Clark, April 24, 1869, Ives to Brother, Feb. 27, 1869, box 6, f. 3, Ives Papers.
Jno. Valentine to Supts. Union Pacific, Jan. 3, 1872, box 6, f. 3, Ives Papers.
Arthur Mellen Wellington, The Economic Theory of the Location of Railways (New York: John Wiley & Sons, 1891).
John Hudson, Plains Country Towns (Minneapolis: Univ. of Minnesota Press, 1985), 54-55, 58.
Van Horne to E. T. Talbot, Railway Age, Nov. 26, 1883, Van Horne LB, no. 3(2):666-84, vol. 1.