1. In 1928, the first federally-protected area in Wyoming was established on October 13. The Devils Tower National Monument was created by President Calvin Coolidge to preserve the unique geological formation located in northeastern Wyoming.

2. On October 13, 1890, construction on the Wyoming State Capitol building began in Cheyenne. The building was completed in 1899 and is listed on the National Register of Historic Places.

3. The infamous outlaw Butch Cassidy was born on October 13, 1866, in Beaver, Utah. Cassidy is said to have spent time in Wyoming during his career as a bank and train robber, and his story has become part of the Old West lore.

4. The Fort Laramie Treaty was signed on October 13, 1851, between the United States government and several Native American tribes, including the Lakota, Cheyenne, and Arapaho. The treaty established reserved territories for the tribes and opened up land for westward expansion.

5. On October 13, 1967, the University of Wyoming football team achieved a record-breaking victory over Brigham Young University, with a final score of 49-42. This game marked the beginning of the Cowboys' undefeated season, which culminated in their first-ever bowl game appearance.