1. On August 3, 1909, the first airplane flight in South Dakota occurred. Piloted by Frank Coffyn, the flight took place in a Curtiss biplane over the city of Rapid City.

2. Legendary American football coach and player, Vince Lombardi, was born on August 3, 1913. Lombardi would go on to coach the Green Bay Packers to five NFL championships in the 1960s.

3. August 3, 1979, marked the end of the Sturgis Motorcycle Rally in South Dakota. The rally is considered one of the largest gatherings of motorcycle enthusiasts in the world and has been held annually since 1938.

4. One of South Dakota's most renowned athletes, Billy Mills, set the world record in the 10,000 meters race on August 3, 1964, in Tokyo, Japan, during the Summer Olympics. Mills became the first American to win the gold medal in the event.

5. On August 3, 1889, South Dakota was officially admitted to the United States as the 40th state. The state is known for its diverse geography, including the Black Hills, Badlands National Park, and the Missouri River.