McCraw, Prophets of Regulation, 48-49.
Charles Francis Adams, Railroads: Their Origin and Problems (New York: G. P. Putnams Sons, 1878), 148-80.
Testimony of Charles Francis Adams, April 17, 1887, PRC, 1:109.
Perkins to Forbes, Jan. 29, 1884, 3.2-3.5; Perkins to Forbes, Jan. 4, 1884, 1880, 7.2, both in CB&Q.
M. Hughitt to C. F. Adams, Dec. 29, 1888, UP, SG2, ser. 1, box 64, f. 1.
Julius Grodinsky, The Iowa Pool: A Study in Railroad Competition, 1870-84 (Chicago: Univ. of Chicago Press, 1950).
For early dependence on competition, see Miller, Railroads and the Granger Laws, 19, 22.
Perkins to Larrabee, Oct. 31, 1887, Larrabee to Perkins, Nov. 18, 1887, Perkins to Larrabee, Dec. 2, 1887, all in C. E. Perkins, Out Letters/In Letters 3, P 4.11 - P 4.3, CB&Q.
Seligman, "Railway Tariffs," 227-28.
CPH to Hopkins, March 21, 1876, LB, 8:119, box 23, Hopkins Collection.