The Saint Louis Exposition or St. Louis Expo was a series of annual agricultural and technical fairs held in St. Louis' Fairgrounds Park, from the 1850s to 1902. In 1904, the Louisiana Purchase Exposition, a major World's Fair, was held in St. Louis, Missouri. Due to the 1904 St. Louis World's Fair, this fair was not held in 1903 or 1904 and ceased after the World's Fair. Memorabilia from the annual St. Louis Expositions are sometimes confused with 1904 World's Fair memorabilia on auction websites.