1. On September 21, 1897, the cornerstone for the Nebraska State Capitol building was laid in Lincoln. The building, which features a distinctive Sower statue atop its dome, was constructed over a period of 10 years and officially opened on January 1, 1932.

2. In 1823, a group of Pawnee Indians attacked a party of American fur trappers near present-day Ash Hollow in western Nebraska. The event became known as the "Ash Hollow Massacre," and serves as a reminder of the often-violent conflict between Native Americans and white settlers in the region. The attack occurred on September 21.

3. September 21, 1908 marked the beginning of a five-day rodeo and festival in North Platte. The event, which included bull riding, calf roping, and other western-themed activities, drew large crowds from across the state and beyond. Today, the festival is known as the Nebraskaland Days Celebration and continues to be held annually.

4. The town of Cairo, located in central Nebraska, was officially incorporated on September 21, 1886. The community, which was named after the Egyptian city of the same name, thrived during its early years as a center for agriculture and transportation. Today, Cairo is home to several historic landmarks and a small but vibrant downtown area.

5. In 1949, the University of Nebraska-Lincoln football team played its first game after a five-year hiatus due to World War II. The Huskers defeated the University of South Dakota 47-0 in front of a crowd of nearly 18,000 fans at Memorial Stadium. The game took place on September 21, and marked the beginning of a new era for Nebraska football.