1. Idaho officially became a state on June 30, 1890, becoming the 43rd state in the United States.

2. On June 30, 1953, the United States Air Force tested the world's first air-to-air guided missile at the Holloman Air Force Base in Alamogordo, New Mexico. The missile was developed by two Idahoans: Frank Watt and Lewis Allison.

3. The first public radio station in Idaho, KBSU, began broadcasting on June 30, 1970. Initially, it was only a part-time operation, but it eventually grew to become a full-time station broadcasting from Boise State University.

4. On June 30, 1917, the Idaho State Legislature met in Boise to consider whether or not to ratify the 19th Amendment to the U.S. Constitution, which granted women the right to vote. Idaho was one of the first states in the country to ratify the amendment.

5. June 30, 1984, saw the groundbreaking of the Idaho Botanical Garden in Boise. The garden is now a popular attraction, featuring a variety of plants and flowers, as well as a concert series and other events throughout the summer months.