There was a charter for a railroad of 165 miles linking the oceans at one of the continent's narrowest points at the Isthmus of Tehuantepec. There was a British line from Vera Cruz and a charter for a road from Vera Cruz to an unspecified terminus on the Pacific coast in Oaxaca, Guerrero, or Michoacán, and another linking the Gulf Coast between Tecolutla and Tampico to the Pacific Ocean somewhere between Zacatula and San Blas.

Robert Gorsuch, The Republic of Mexico and Railroads: A Brief Review of Her Past History and Present Condition (New York: Hosford & Sons, 1881), 9-12.

El General W.S. Rosecrans Y El Ferrocarril De Tuxpan Al Pacifico (Mexico. Imprenta Dirigida Por Jose Batiza, Calle de Alfaro núm. 13, 1870) no. 8.

Proyecto De Un Ferrocarril Y Telégrafo Desde la Línea Divisoria De Mexico Y Los Estado-Unidos patriendo Del Presidio Del Norte Sobfre El Rio Grande hastga El Mar De Cortés Ó Golfo De California . . .(México, Imprenta De F. Diaz De Leon Y Santiago White, 1868), no. 7.

Proyecto del Ferrocarril Internacional Sometido Al Congreso de la Union (Mexico, Imprenta Del Gobierno, En Palacio, 1872), Pamphlets, Railroads of Mexico, volume 1: no.15.

Report of the Secretary of Finance of the United States of Mexico of the 15th of January 1879. . . (New York: N. Ponce De Leon, 1880), 51-54.

John Mason Hart, Empire and Revolution: The Americans in Mexico since the Civil War (Berkeley: University of California Press, 2002), 33-59.