1. Nebraska Achieves Statehood: On July 31, 1867, Nebraska became the 37th state of the United States. This day is considered one of the most significant in the state's history.

2. The First Air-Mail Delivery: The first air-mail delivery in Nebraska took place on July 31, 1911. The pilot, Earle Ovington, flew from Omaha to Chicago, covering a distance of 500 miles in roughly eight hours.

3. North Platte Canteen Opens: On July 31, 1941, during World War II, the North Platte Canteen opened in Nebraska. The canteen served more than six million service members during the war, and became a symbol of Nebraska's patriotism and support for its troops.

4. Birth of Warren Buffett: Warren Buffett, one of the most successful investors of all time, was born on July 31, 1930 in Omaha, Nebraska. Buffett is currently one of the richest people in the world and a famous philanthropist.

5. University of Nebraska-Lincoln Founded: The University of Nebraska-Lincoln was established on July 31, 1869, just two years after Nebraska achieved statehood. Today, the university is one of the largest in the Midwest and a major research institution.