On August 28, the following notable historical events related to Missouri have been recorded:

• 1804: The Lewis and Clark Expedition was near present-day Sioux City, Iowa, across from Missouri’s Atchison County, on or around August 28. 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 28, non-Mormon vigilantes in Daviess and Carroll Counties intensified their campaign against Mormon settlers, with 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 28, Union forces were regrouping after their retreat from Springfield, while Confederate forces strengthened their control in southwest Missouri, highlighting Missouri’s pivotal role in the conflict.
• 1873: The Missouri, Kansas, and Texas Railway (Katy Railroad) expanded its network through southwest Missouri around August 28, connecting Springfield to other regions and fostering economic growth in the state.
• 1904: The St. Louis World’s Fair, or Louisiana Purchase Exposition, was ongoing, with August 28 featuring international trade exhibits and cultural performances, reinforcing Missouri’s prominence as a global hub.
• 1963: While the March on Washington for Jobs and Freedom took place in Washington, D.C., on August 28, Missouri played a role in the civil rights movement. St. Louis and Kansas City activists participated, and the event inspired local demonstrations in Missouri, reflecting the state’s engagement in the national push for equality.