1. On August 9, 1877, the famous gunfighter and outlaw, Sam Bass, was killed in a shootout with law enforcement in Big Spring, Texas. Although he never committed a crime in Wyoming, Bass's life and exploits were well known in the state and he is often remembered and discussed in Wyoming history and legend.

2. August 9, 1898, was the day that the Wyoming State Hospital for the Insane was established in Evanston, Wyoming. This hospital, which later became known as the Wyoming State Hospital, provided care and treatment for individuals with mental illness throughout the state.

3. On August 9, 1904, the first annual Wyoming State Fair was held in Douglas, Wyoming. This fair has continued to be held annually, albeit in different locations throughout the state over the years, and remains an important event for Wyoming residents to this day.

4. August 9, 1936, saw the opening of the world's first ski lift at the Snow King Ski Area near Jackson, Wyoming. This lift, which was built by the Civilian Conservation Corps, helped to revolutionize the skiing industry and remains one of the most popular ski areas in the state.

5. Finally, August 9, 1986, was the day that Yellowstone National Park was designated as a UNESCO World Heritage Site. This designation recognizes the unique natural and cultural values of the park and helps to ensure that it is protected and preserved for future generations to enjoy.