Adams to S. R. Callaway, Dec. 23, 1885, UP, PO, OC, vol. 33, ser. 2, r. 27
White, American Locomotive, 110, 444-45.
Maury Klein, Union Pacific, vol. 1: Birth of a Railroad 1862-1893 (Garden City, N.Y.: Doubleday, 1983), 525-27.
Usselman, Regulating Railroad Innovation, 10-11, 63, 70-76, 99-101.
Usselman, Regulating Railroad Innovation, 163-87.
"Conference between the Management of the Northern Pacific Railroad and the Employees in Its Train Service . . . January 11, 1894," p. 28, 11.A.5.6 F, 138.H.8.8 (F), NP.
H. B. Stone to Perkins, Feb. 18, 1888, CBQ 33, 1880, 9.11.