Adams to Sidney Dillon, Jan. 12, 1886, UP, PO, OC, vol. 30, ser. 2, r. 26.
Adams to F. L. Ames, Sept. 30, 1886, UP, PO, OC, vol. 36, ser. 2, r. 31.
C. F. Crocker to CPH, Jan. 14, Feb. 24, 25, 1888, CPH Papers, ser. 1, r. 46.
A. C. Hutchinston to CPH, March 3, 8, 1893, CPH Papers, ser. 1, r. 48.
Oakes to Carr, Feb. 10, 1878, LB 21a, Villard Papers.
Barbara Young Welke, Recasting American Liberty: Gender, Race, Law, and the Railroad Revolution, 1865-1920 (New York, Cambridge Univ. Press, 2001), 1-42.