"Purpose and Ideals of the Mexican Revolution," The American Academy of Political and Social Science, Philadelphia, 1917.
Railway Age. Contains good current reports on transportation.
Rapports commerciaux des agents diplomatiques et consulaires de France: Année 1902, No. 93, "Mexique," Paris; Année, 1903, No. 298, "Mexique," Paris; Année 1905, No. 4432, "Mexique," Paris.
Reid, Frederick, "Must We Clean Up Mexico?" Sunset, vol. 36, p. 27, February, 1916.
Review of Reviews, vol. 50, p. 630, November, 1914.
Rolland, M. C, "A Trial of Socialism in Mexico," Forum, vol. 56, p. 79, July, 1916.
Romero, Matias, "Wages in Mexico," Commercial Information Concerning the American Republics and Colonies, 1891, Bulletin No. 41, Washington, April, 1892.
Roosevelt, Theodore, "Our Responsibility in Mexico," New York Times, December 6, 1914.
Rowe, L. S., "Administrative Centralization in Mexico," Yale Review, vol. 12, p. 231, November, 1903.
"Sisal," bulletin published by the Comision Reguladora del Mercado de Henequen, New York.
Steffens, Lincoln, "Making Friends with Mexico," Collier's, November 25, 1916.
Trichler y Cordova, Martin, "Constitutional Persecution of the Church," Outlook, vol. 114, p. 558, November 8, 1916.
Usher, Roland G., "Carranza's New Industrial Policy," North American Review, vol. 205, p. 398, 1917.
Wilfley, L. R., "The Land Problem in Mexico," North American Review, vol. 203, p. 867, 1916.
Wolfe, A. J. "Foreign Credits," Department of Commerce and Labor, Bureau of Manufactures, Special Agents Series, No. 62, Washington, 1913.
Young, Arthur N., "Finances of the Federal District of Mexico," Mexico, 1918.
"France's Stake in Mexico," Nation, vol. 98, p. 290, March 19, 1914.
"German Efforts in Mexico," World's Work, vol. 35, p. 208, 1917.
"Mexico, Its Political Situation, Its Resources and Its Military