CPH to Colton Oct. 26, 1875, Huntington Letters, 4:397.
Huntington came to regard the attack on Cohen as a colossal mistake.
D. Colton to CPH, Sept. 20, 1878, Octopus Speaks, 560.
CPH to Hopkins, May 12, 1876, LB, 9:19, box 24, Hopkins Collection.
Colton to CPH, Feb. 7, March 5, 1878, Octopus Speaks, 467, 477.
Colton to CPH, March 29, 1879, Octopus Speaks, 482.
Flagg to CPH, Nov. 15, 1878, CPH Papers, ser. 1, r. 16.