1. In 1907, South Dakota's first law school, the University of South Dakota School of Law, was established in Vermillion. The school is still in operation today and is part of the larger University of South Dakota system.

2. On July 26, 1954, the Crazy Horse Memorial, which is located in the Black Hills of South Dakota, began construction. The project to create a monument to honor the Native American leader and his people has been ongoing since then and is still a work in progress.

3. The town of Deadwood, South Dakota, was founded on July 26, 1876, during a gold rush in the area. The town quickly became known for its lawlessness and rowdy saloons, and it was the site of the killing of famous gunslinger Wild Bill Hickok.

4. On July 26, 1882, the first passenger train arrived in Pierre, South Dakota. The train brought with it new settlers and helped to boost the economy of the city, which became the state capital in 1889.

5. In 1993, a major flooding event occurred in many parts of South Dakota, including the cities of Pierre and Fort Pierre, which are located on opposite sides of the Missouri River. The flooding caused significant damage to homes, businesses, and infrastructure, and it took months for the communities to recover. Many residents still remember the event today, which has spurred efforts to improve flood protection measures in the region.