1. The Battle of the Tongue River took place on June 3, 1865. It was a conflict between the US Army and the Sioux, Cheyenne, and Arapaho tribes in Wyoming. The battle resulted in a victory for the US Army, but it was costly in terms of casualties.

2. On June 3, 1927, the town of Casper experienced a devastating tornado. The tornado was one of the deadliest in Wyoming's history, killing 10 people and injuring dozens more. The tornado also caused significant damage to homes, businesses, and other buildings.

3. June 3, 1966, marks the opening of the Jackson Hole Aerial Tram in Teton Village. The tram is a popular attraction for tourists and skiers, offering spectacular views of the surrounding mountains and valleys.

4. The Cody Stampede Rodeo, one of Wyoming's biggest rodeo events, typically starts on or around June 3rd each year. The rodeo attracts top cowboys and cowgirls from around the country and features events like bull riding, steer roping, and barrel racing.

5. On June 3, 1990, the Wyoming Women's Foundation was established. The foundation works to promote economic self-sufficiency and leadership for women in Wyoming. It provides grants, scholarships, and advocacy to support women and girls in the state.