CPH to C. Crocker, May 17, 1871, Letters from Collis P. Huntington, 3: 275.
Crocker to Huntington, Jan. 22, 1878, CPH Papers, ser. 1, r. 14.
CPH to Stanford, Oct. 25, 1871, Huntington Letters, 3:291.
Hopkins to CPH, Oct. 10, 1872, CPH Papers, ser. 1, r. 5.
Hopkins to CPH, Dec. 8, 1872, CPH Papers, ser. 1, r. 5.
Conness to CPH, Nov. 9, 17, 1875, CPH Papers, ser. 1, r. 8.