The Frontier Army Museum depicts the Frontier Army (1817-1917) and history of Fort Leavenworth (1827-present). The original collection began in 1939 when the wagon shop at Fort Leavenworth closed and the horse-drawn vehicles were relocated and called the "Old Rolling Wheels Museum". In 1960
In the 1830s, settlers heading for the Oregon and Santa Fe Trails crossed the Missouri River at this point. Teams of oxen pulled the loaded wagons through the "cut " in the hillside you can still see today.