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Treaty of Guadalupe Hidalgo: Primary Documents in American History

On February 2, 1848, the United States and Mexico signed the Treaty of Guadalupe Hidalgo, ending the Mexican War (1846-48). This guide provides access to digital materials at the Library of Congress, links to external websites, and a print bibliography.


The Treaty of Guadalupe Hidalgo was signed by the United States and Mexico on February 2, 1848, ending the Mexican War (1846-48) and extending the boundaries of the United States by over 525,000 square miles. In addition to establishing the Rio Grande as the border between the two countries, the territory acquired by the U.S. included what would become the states of Texas, California, Nevada, Utah, most of New Mexico and Arizona, and parts of Colorado and Wyoming. In exchange Mexico received fifteen million dollars in compensation for the territory and the U.S. agreed to assume claims from private citizens of these areas against the Mexican government.