1. In 1869, the territory of Wyoming granted women the right to vote. This made Wyoming the first state to give women suffrage, nearly 50 years before the passage of the 19th amendment to the US Constitution in 1920.

2. In 1904, President Theodore Roosevelt established the first national wildlife refuge in Wyoming. Located in Jackson Hole, the refuge was created to protect declining populations of elk, bison, moose, and other wildlife in the area.

3. In 1924, the University of Wyoming played in its first-ever football game at War Memorial Stadium in Laramie. The Cowboys defeated the University of Colorado by a score of 10-0.

4. In 1974, a coal mine explosion in Hanna, Wyoming killed 9 miners and injured several others. The disaster led to increased safety regulations and reforms in the coal-mining industry.

5. In 1996, Wyoming Governor Jim Geringer signed a bill legalizing limited gambling in the state. The law permitted slot machines and video poker in bars and other licensed establishments, but prohibited table games such as blackjack and poker.