1. In 1904, the first automobile race in Wyoming took place on October 11th in Cheyenne. The race was organized by the Cheyenne Automobile Club and included several vehicles competing in a 10-mile race around Cheyenne.

2. In 1913, the University of Wyoming football team played their first game of the season on October 11th, defeating the University of Colorado 10-0. The game was played in Laramie, Wyoming.

3. On October 11, 1926, the iconic Wyoming-Colorado Bridge opened for traffic. This bridge, which spans the Big Laramie River, was the longest bridge in Wyoming at the time and played an important role in connecting the towns of Laramie and Cheyenne.

4. In 1949, the first Wyoming vs. Colorado State University Homecoming football game was played on October 11th in Laramie. Wyoming won the game 28-6, marking the beginning of a fierce rivalry between the two teams that continues today.

5. On October 11, 1974, the Wyoming State Penitentiary in Rawlins, Wyoming was the site of a hostage situation that lasted for several days. The incident began when two inmates took a judge and several others hostage in a courtroom. The situation was eventually resolved without any loss of life, but it had a lasting impact on Wyoming's prison system and the way it handled inmate grievances.