Flagg to CPH, Nov. 18, 1878, CPH Papers, ser. 1, r. 16.
Colburn to Gates, Feb. 6, 1878, Sherrill to Gates, Feb. 10, 1878, CPH Papers, ser. 1, r. 14.
Bardwell to CPH, Oct. 18, 30, Dec. 9, 1878, Boyd to Gates, Sept. 13, 1878, CPH Papers, ser. 1, r. 15
Bardwell to CPH, May 15, 1879, CPH Papers, ser. 1, r. 17.
Huntington to Colton, Jan. 22, 1878, Jan. 28, 1878, Feb. 5, 1878, Feb. 12, 1878, Feb. 19, 1878, Feb. 25, 1878, Octopus Speaks, 454, 457-58,465, 468, 470, 472.
For California Railroad Commission, see Deverell, Railroad Crossings, 51-52.
Grodinsky, Transcontinental Railway Strategy, 60-62.
Personal and Confidential, CPH to Colonel Thos A. Scott, May 25, 1877, LB, 9:185, box 24, Hopkins Collection.
Thomas Sheridan, Arizona: A History (Tucson: Univ. of Arizona Press, 1995), 115-16.