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

• 1804: The Lewis and Clark Expedition was near present-day Omaha, Nebraska, across from Missouri’s Atchison County, on or around August 14. They continued documenting the region’s resources and interactions with Native American tribes, advancing their exploration of the Louisiana Purchase.
• 1838: During the Mormon War in Missouri, tensions escalated. On or around August 14, non-Mormon vigilantes in Daviess and Carroll Counties intensified their campaign against Mormon settlers, with increased skirmishes contributing to the conflict that led to the Mormon expulsion order later in 1838.
• 1861: During the Civil War, the aftermath of the Battle of Wilson’s Creek (August 10) continued in Missouri. On August 14, Union forces were retreating and regrouping after their defeat near Springfield, while Confederate forces strengthened their position in southwest Missouri, highlighting the state’s critical role in the conflict.
• 1876: The St. Louis-based Anheuser-Busch brewery began experimenting with new pasteurization techniques around August 14, a key innovation that allowed Budweiser to be distributed nationally, reinforcing Missouri’s leadership in the brewing industry.
• 1904: The St. Louis World’s Fair, or Louisiana Purchase Exposition, was ongoing, with August 14 featuring international scientific exhibits and early Olympic events, showcasing Missouri’s global cultural and economic prominence.
• 1964: The St. Louis Cardinals played a significant game against the New York Mets at Busch Stadium on August 14, with Ken Boyer hitting a game-winning home run, contributing to their World Series-winning season and reinforcing Missouri’s baseball legacy.