1. Theodore Roosevelt established the first national monument in Wyoming on October 23, 1906. Devils Tower National Monument was designated by Roosevelt and stands as a popular natural landmark in the state today.

2. On October 23, 1935, Wyoming resident and pilot Earl Brockelsby set the world record for non-stop flight duration. Brockelsby flew a small monoplane for 50 hours and 50 minutes, covering a distance of 4,100 miles.

3. The Wyoming Game and Fish Department was established on October 23, 1923. The department is responsible for managing and conserving the state's wildlife resources.

4. Jackson Hole Mountain Resort, one of Wyoming's premier ski destinations, opened on October 23, 1965. The resort boasts over 2,500 acres of skiable terrain and is a popular winter vacation spot.

5. In 2015, the University of Wyoming celebrated its 128th birthday on October 23. Founded in 1887, the university is the only four-year institution of higher learning in the state and serves as a hub of academic and research activity.