Adams to F. Gordon Dexter, Sept. 3, 1889, UP, PO, OC, vol. 48, ser. 2, r. 48.
Adams to C. S. Mellen, Dec. 30, 1889, UP., PO, OC, vol. 49, ser. 2, r. 44
Klein, Union Pacific, 616-20.
Adams to G. Dodge, May 1, 9, 1890, UP, PO, OC, vol. 50, ser. 2, r. 45.
James A. Ward, That Man Haupt: A Biography of Herman Haupt (Baton Rouge: Louisiana State Univ. Press, 1973), 219.
Charles Francis Adams, Charles Francis Adams, 1835-1915: An Autobiography (Boston: Houghton Mifflin, 1916), 131.
Charles Francis Adams, Charles Francis Adams, 1835-1915: An Autobiography (Boston: Houghton Mifflin, 1916), 147.