1. On June 22, 1874, a group of U.S. Army troops led by Lt. Colonel George Armstrong Custer discovered gold in the Black Hills of Montana. This discovery would ultimately lead to the Black Hills Gold Rush, which brought thousands of prospectors and settlers to the area.

2. June 22, 1887, saw the creation of Yellowstone National Park, one of Montana's most iconic landmarks. The park, which spans across Montana, Wyoming, and Idaho, is home to geysers, hot springs, wildlife and breathtaking scenery that draws millions of visitors annually.

3. In 1910, on June 22, four separate wildfires that had been raging in Montana's national forest came together to create what is known as the "Big Blowup." This massive fire destroyed over three million acres of forest and took many lives, making it one of the worst forest fires in American history.

4. June 22, 1927, marked the day when Montana's Glacier National Park was officially opened to the public. The park, which is located in the northern part of the state, is a popular destination for nature lovers, hikers, and adventurers.

5. On June 22, 1936, Montana-born aviator Louise Thaden became the first woman to win the Bendix Trophy, a prestigious race that involved flying from California to Cleveland in record time. Thaden went on to become a pioneering aviator and advocate for women's rights in aviation, inspiring many women to follow in her footsteps.