Quote, CPH to Crocker, April 5, 1883, CPH Papers, vol. 30:100l, ser. 2, r. 6.
CPH to Crocker, Feb. 11, May 3, 1880, CPH Papers, vol. 27, ser. 2, r. 6.
CPH to Crocker, Jan. 18, March 1, May 12, May 24, 1881, CPH Papers, vol. 28, ser. 2, r. 6.
CPH to Crocker, Dec. 22, 1881, vol. 29, ser. 2, r. 6.
