Perkins to Forbes, Jan. 29, 1884, 3.2-3.5; Perkins to Forbes, Jan. 4, 1884, 1880, 7.2, both in CB&Q.
M. Hughitt to C. F. Adams, Dec. 29, 1888, UP, SG2, ser. 1, box 64, f. 1.
Julius Grodinsky, The Iowa Pool: A Study in Railroad Competition, 1870-84 (Chicago: Univ. of Chicago Press, 1950).
