Cooke to Gen. George Sargent, April 20, 1871, Northern Pacific, Letters no. 1 (LB), Jan. 19, 1870 - Sept. 27, 1871, Private Letters, Jay Cooke.
tributary, Cooke to Geo. W. Colton, March 26, 1873, LBs, Cooke Papers.
den Otter, Philosophy of Railways, 158.
Pierre Berton, The Impossible Railway (New York: Knopf, 1972), 8.
den Otter, Philosophy of Railways, 158.
Den Otter, Philosophy of Railroads, 170-73.
A. W. Currie, The Grand Trunk Railway of Canada (Toronto: Univ. of Toronto Press, 1957), 85-137, 299-306.
Ann Carlos and Frank Lewis, "The Creative Financing of an Unprofitable Enterprise: The Grand Trunk Railway of Canada, 1853-1881", Explorations in Economic History 32 (1995): 273-301.
den Otter, Philosophy of Railways, 176-78.