Michael Quinion, World Wide Words.
Charles Francis Adams, Charles Francis Adams, 1835-1915: An Autobiography (Boston: Houghton Mifflin, 1916), 173.
Adams to Harris, Nov. 24, 1885, UP, PO, OC, vol. 30, ser. 2, r. 26.
Adams, Charles Francis Adams, 193.
Maury Klein, Union Pacific, vol. 1, Birth of a Railroad, 1862-1893 (Garden City, N.Y.: Doubleday, 1987), 453-57.
Old thief, Edward Chase Kirkland, Charles Francis Adams Jr., 1835-1915: The Patrician at Bay (Cambridge: Harvard Univ. Press, 1965), 92.