On June 14, the following notable historical events related to Missouri have been recorded:

• 1804: The Lewis and Clark Expedition was in the St. Louis area on or around June 14, finalizing preparations for their journey up the Missouri River to explore the Louisiana Purchase. They were securing final supplies and coordinating with local traders, reinforcing Missouri’s role as the launch point for western exploration.
• 1820: Missouri’s constitutional convention, convened in St. Louis, was actively drafting the state’s first constitution around June 14. This was a critical step toward Missouri’s admission as a state in 1821, amidst national debates over slavery tied to the Missouri Compromise.
• 1861: During the Civil War, Missouri was a focal point of conflict. On June 14, Union General Nathaniel Lyon was mobilizing forces toward Jefferson City after the failed St. Louis Conference, preparing to capture the state capital to secure Missouri for the Union against Confederate sympathizers.
• 1876: The St. Louis-based Missouri Botanical Garden, founded by Henry Shaw, hosted a significant public exhibition around June 14, showcasing rare tropical plants and reinforcing its reputation as a leading botanical research center.
• 1904: The St. Louis World’s Fair, or Louisiana Purchase Exposition, was underway, with June 14 featuring early international scientific exhibits and cultural performances, highlighting Missouri’s prominence as a global hub.
• 1967: The St. Louis Cardinals played a notable game against the New York Mets at Busch Stadium on June 14, with Bob Gibson pitching a shutout and Orlando Cepeda hitting a key home run, contributing to their World Series-winning season and reinforcing Missouri’s baseball legacy.