1. The historic Deadwood 1876 Gold Rush began on May 5, 1876, when a prospector named Tom O'Neil discovered gold in Deadwood Gulch. This discovery sparked a rush of miners to the area, leading to the growth and development of the city of Deadwood.

2. On May 5, 1892, the Homestake Mine in Lead became one of the largest gold mines in the world, producing over 40 million ounces of gold throughout its history. The mine operated for over a century until it finally closed in 2002.

3. On May 5, 1961, South Dakota native Alan Shepard became the first American to travel to space when he piloted the Freedom 7 spacecraft on a suborbital flight. Shepard's historic journey paved the way for future space exploration and inspired a generation of Americans to reach for the stars.

4. May 5, 1967, marked the opening of the Crazy Horse Memorial in the Black Hills of South Dakota. The massive sculpture, which is still under construction, is a tribute to the Lakota warrior Crazy Horse and is one of the largest mountain carvings in the world.

5. On May 5, 2007, the women's basketball team from South Dakota State University won the Summit League Championship, earning their first-ever trip to the NCAA Tournament. The team, which was led by star player Megan Vogel, went on to make history by winning their first-round game in the tournament over the University of Texas.