Welcome to the Encyclopedia of Arkansas

This Day in Arkansas History

June 12, 1848

Arkansas senator Ambrose Sevier, who played a prominent role in the negotiation of the Treaty of Guadalupe Hidalgo at the end of the Mexican War, left Mexico City with the last occupying U.S. troops, carrying the ratified treaty in his saddle bag. Sevier shepherded the treaty through its U.S. Senate ratification, and President James K. Polk called upon Sevier to serve as a commissioner to guarantee its ratification in the Mexican congress.

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About the Encyclopedia

The CALS Encyclopedia of Arkansas is a free, authoritative source of information about the rich history, geography, and culture of Arkansas. It is updated regularly to ensure the people of Arkansas have an accurate and accessible resource to explore our heritage. We invite you to browse our text entries and media galleries to learn more about the people, places, events, legends, and lore of the 25th state. We are continually adding new entries, photographs, maps, videos, quizzes, lesson plans, and more, so check back frequently to see what’s new.

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New to Arkansas?

Our overview page covers everything you would want to know about our beautiful state, including state symbols, demographics, and more!

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