C.E. Bretherton to I.E. Requa, May 16, 1894CPH Papers, ser. 1, r. 53.
CPH to Gates, May 8, 1890CPH Papers, ser. 1, r. 48.
C. E. Bretherton to CPH, May 18, 1894 CPH Papers, ser. 1, r. 53.
Gorsuch to CPH, Jan. 27, 31, 1894, Corthell to CPH, Jan. 30, March 4, 1894, CPH to Corthell, March 12, 1894, CPH Papers ser. 1, r. 52.
CPH to Diaz, April 5, 1894, Corthell to CPH, April, 30, 1894, CPH Papers, ser. 1, r. 53.
Samuel Killibrew to CPH, June 8, 1894, CPH Papers, ser. 1, r. 53.