CPH to Speyer & Co., Dec. 20, 30, 1882, CPH Papers, vol. 79, ser. 2, r. 13.
Speyer & Co. to CPH, Nov. 13, 1882, CPH Papers, ser. 1, r. 34.
Gates to Chambers, Jan. 8, 1885, CPH Papers, vol. 92, ser. 2, r. 15.
Also Gates to J. T. White, Jan. 31, 1885, Gates to A. N. Towne, July 15, 1885, C. Crocker to CPH, Dec. 10, 1883, no. 260, Crocker Papers.
Speyer & Co. to CPH, Feb. 11, 17, 1885, CPH Papers, ser. 1, r. 39.
Dietrich G. Buss, Henry Villard: A Study of Transatlantic Investments and Interests, 1870-1895 (New York: Arno Press, 1978), 170-75.
Northern Pacific Litigation, Examination of Thomas Oakes, 65, box 61, f. 432, Villard Papers.
Ainsworth Reminiscences, Jan. 4, 1882, Mss. 504, Oregon Historical Society.