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Welcome to the Encyclopedia of Arkansas
This Day in Arkansas History
July 16, 1942
The Pine Bluff Arsenal (PBA), a World War II ordnance plant, produced its first shell. PBA remained in operation after World War II, but production decreased. In 1953, PBA became the only U.S. site for full-scale production of biological munitions, continuing in this capacity until 1969.
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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.
Our overview page covers everything you would want to know about our beautiful state, including state symbols, demographics, and more!
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