Map of Oregon and Upper California : from the surveys of John Charles Frémont and other authorities.

Map shows major physical features, areas of Native American habitation, major cities and towns; northern portion of map is labeled Oregon Territory, Missouri Territory, southern portion is Upper California and New Mexico; February 1848 treaty boundary line between Mexico and the United States. Includes notes and "explanations." Inset: "Profile of the travelling route from the South Pass of the the Rocky Mountains to the Bay of San Francisco." Relief shown by hachures and spot heights. Scale [ca. 1:3,000,000].
Date: 1872
Creator: Preuss, Charles, 1803-1854
System: The Portal to Texas History

Carta general de la república indicando las líneas del proyectado Ferrocarril Internacional de México : según las propuestas sometidas al Congreso de la Union por Sr. D. Eduardo Lee Plumb en representacion de la Companía del Ferrocarril Internacional de Texas.

Map shows proposed international railroad route between Mexico, Texas, and New York. Accompaning text: Ferrocarril Internacional / Eduardo Lee Plumb. Scale [ca. 1:13,500,000].
Date: 1872
Creator: Debray, lithographer
System: The Portal to Texas History

Carta esférica de los Reconocimientes hechos en la Costa N.O. de América en 1791 y 92 por las goletas Sutíl y Mexicána y otros Buques de S.M.

Map shows the Pacific Northwest coastline, islands, and waterways as explored by the Spanish schooners, Sutil and Mexicana, et al. Relief shown by hachures. Scale not given.
Date: 1872
Creator: Cardano, José Maria
System: The Portal to Texas History