The Missouri state flag was created in 1909 and was adopted on March 22, 1913.
The designer, Marie Elizabeth Watkins Oliver, was a member of the Daughters of the American Revolution, the group responsible for the creation of a number of other state flags.
The flag features a triband design of red, white and blue bands. The red stripes symbolize valor, and white represents purity.
The blue stripe has three different meanings: vigilance, justice and permanency. The design is also a nod to the influence of France during Missouri's earliest history.