CPH to HEH, Jan. 5, 1898, HEH 4168, box 62, HEH Collection, 1794-1970.
E. B. Crocker to Hopkins, March 29, 1867, LB, 10:7, box 24, Hopkins Collection.
Carman and Mueller, "Contract and Finance Company," 333-34
Bain, Empire Express, 408, 739.
Bain, Empire Express, 207-8, 252-56.
Bain, Empire Express, 206-08.
Hirshson, Grenville M. Dodge, 50-57, 60, 67, 73, 89.
Hopkins to CPH, July 19, 1865, Feb. 16, 1866, CPH Papers, ser. 1, r. 1.