Hadley, Railroad Transportation, 70-71.
William Z. Ripley, Railroads, Rates, and Regulation (New York: Longman's Green, and Co., 1912), quote 53-54, 55, 65, 89.
Sharkey, Theory of Natural Monopoly, 19-22.
Berk, Louis D. Brandeis, 74-78.
Crocker to CPH, July 3, 1890, CPH Papers, ser. 1, r. 48.
Testimony of CPH, Testimony of Artemas Holmes, PRC, 1:40, 178; Adams to A. B. Stickney, Dec. 6, 1888, UP, PO, OC, vol. 45, ser. 2, r. 40.
Perkins to Forbes, Feb. 24, 1881, F 3.2.3.5, CB&Q.
Official History, 13-14.
Correspondence between Officers of the Missouri Pacific Railway Co. and Members of the Knights of Labor of America, etc., 19 in Railway Pamphlets, vol. 109, Stanford Univ. Library.