Ernst von Hesse-Wartegg, "Across Nebraska by Train in 1877: The Travels of Ernst von Hesse-Wartegg," trans. and ed. by Frederic Trautmann, Nebraska History 65 (Fall 1984): 411-15.
Hesse-Wartegg, "Across Nebraska by Train," 412-14.
See Sidney Dillon, "The West and the Railroads," North American Review 152 (April 1891): 443-51.
Stanley Engerman, "Some Economic Issues relating to Railroad History and the Evaluation of Land Grants," Journal of Economic History 32 (June 1972): 443-63.
John H. Coatsworth, "Obstacles to Economic Growth in Nineteenth-Century Mexico," American Historical Review 38 (Feb. 1978): 99, 100.
Engerman, "Some Economic Issues," 452.