Taylor and Neu, American Railroad Network, 69-76
"Practical Railroading," Railway Age, July 5, 1877, p. 1104.
Fast Freight Lines - The Other Side, Railway Age, Sept. 13, 1877, p. 1308.
Testimony of Thomas Kimball, June 22, 1887, PRC, 3:1123, 1128.
Hovenkamp, Enterprise and American Law, 151-52.
Poor's statistics are often mutually contradictory from table to table, but they are still the best available source for these years.
Adams to S. R. Callaway, Dec. 1, 1884, UP, PO, OC, vol. 24, ser. 2, r. 21.
Adams to Hoyt, Feb. 4, 1885, UP, PO, OC, vol. 27, ser. 2, r. 23.
Daniel Lewis, Iron Horse Imperialism: The Southern Pacific of Mexico, 1880-1951 (Tucson: Univ. of Arizona Press, 2007), 18-20.
"Statement of Chicago business to/from and through Denver Colonel during the year 1878," 33 1870 7.42-8.11, CB&Q.