1. In 1876, the United States Army, under the leadership of General George Crook, defeated the Sioux and Cheyenne tribes in the Battle of Powder River in northern Wyoming.

2. On August 24, 1894, Wyoming became the first state in the United States to grant women the right to vote, making it a trailblazer for suffrage movements across the country.

3. In 1909, the historic Sheridan Inn, located in Sheridan, Wyoming, opened its doors to guests. The inn played a significant role in western history and was frequented by famous guests such as Buffalo Bill Cody and Ernest Hemingway.

4. August 24, 1918 saw the death of infamous Western outlaw "Big Nose" George Parrott. Parrott was lynched in Rawlins, Wyoming, after being arrested for the murder of two lawmen.

5. In 1967, Wyoming Senator Gale McGee announced the creation of the Island Unit of Devils Tower National Monument. This area protects the isolated spire of Devils Tower and the surrounding prairie ecosystem. It was designated as an official national park in 1972.