Conkling to CPH, Jan. 24, Feb. 1, 1880, CPH Papers, ser. 1, r. 18.
CPH to Conkling, Dec. 22, 1880, CPH Papers, ser. 2, r. 12.
CPH to Colton, Jan. 14, 1876, Huntington Letters, 3:445. Octopus Speaks, 286.
Lavender, Great Persuader, 215, 311.
CPH to Hopkins, June 7, 1870, CPH to Crocker, Dec. 21, 1870, Huntington Letters 2:175, 225.
Summers, Press Gang, 109-10.
Adams to Usher, Oct. 13, 1884, UP, PO, OC, vol. 23, ser. 2, r. 19.
CPH to Hopkins, March 15, 1876, LB, 8:111, box 23, Hopkins Collection.
CPH to Colton, Nov. 15, 1877, Octopus Speaks, 431.