1. In 1927, South Dakota celebrated its centennial with a week-long celebration in Sioux Falls, which included a carnival, parades, and a football game.

2. On September 30, 1930, President Herbert Hoover visited the town of Milbank, South Dakota, to deliver a speech on agriculture and soil conservation.

3. In 1949, the Oahe Dam was dedicated in Pierre, South Dakota, as part of the Pick-Sloan Plan for water resource development in the Missouri River Basin.

4. On September 30, 1972, the University of South Dakota's football team beat North Dakota State 63-6, setting a new school record for points scored in a game.

5. In 2016, the sculptor John Lopez unveiled his memorial statue of South Dakota Governor George S. Mickelson in Pierre, which was the culmination of a project that had taken over three years to complete.