Welcome to the Encyclopedia of Arkansas

Everything from Book cover featuring falling person reaching for guitar Fall Through to Meteorite on display including didactic text in library with bookshelves in background. Meteorites

This Day in Arkansas History

October 18, 1917

Mamie Phipps Clark, the first African-American woman to earn a Doctor of Philosophy degree in psychology from Columbia University, was born in Hot Springs (Garland County). The research she did with her husband was important in the success of the 1954 case Brown v. Board of Education of Topeka, Kansas, in which the U.S. Supreme Court declared the doctrine of “separate but equal” with regard to education to be unconstitutional because such separation generated “a feeling of inferiority as to their status in the community” on the part of African-American students.

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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.

New to Arkansas?
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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