1. In 1889, the Wyoming State Legislature approved the creation of the University of Wyoming in Laramie, making it the first institution of higher education in the state.

2. On June 10, 1920, Wyoming became the 27th state to ratify the 19th Amendment to the United States Constitution, which granted women the right to vote.

3. In 1985, a massive tornado struck the town of Wheatland, Wyoming on June 10, causing widespread destruction and killing two people. The tornado was later rated an F3 on the Fujuta-Pearson scale, with winds reaching up to 206 mph.

4. On June 10, 1977, artist Robert Russin's sculpture "The Wyoming Hereford" was dedicated in front of the Wyoming State Capitol Building in Cheyenne. The sculpture, which is made of bronze and stands over 15 feet tall, depicts a Hereford cow looking out over the plains.

5. In 2006, the National Park Service designated the Fossil Butte National Monument in Kemmerer, Wyoming as a dark sky park, recognizing the area's exceptional stargazing opportunities and efforts to reduce light pollution. The designation was announced on June 10, coinciding with the anniversary of the monument's establishment in 1972.