1. In 1863, a group of Cheyenne and Sioux warriors attacked a U.S. Army detachment at a place called Platte Bridge Station, near present-day Casper. The soldiers, who were guarding a supply train, were caught off guard and suffered heavy casualties. The attack was part of a larger conflict known as the Dakota War of 1862, which took place mainly in Minnesota and involved several Sioux tribes.

2. In 1876, a party of gold prospectors led by Albert Jenney discovered a rich vein of gold on a hill near South Pass City. The discovery sparked a gold rush and led to the founding of several new towns in the area, including Atlantic City, Miner's Delight, and others. The South Pass mining district eventually became one of the most productive in the state's history.

3. In 1903, a group of ranchers and cattlemen in Wyoming met to form the Wyoming Stock Growers Association (WSGA), which would eventually become one of the state's most powerful political organizations. The WSGA played a key role in the so-called "Johnson County War" of 1892, when a group of Wyoming ranchers launched a violent campaign against alleged cattle rustlers.

4. In 1926, the first transcontinental flight from New York to San Francisco passed over Wyoming. The flight took nearly 27 hours and included several stops for refueling and repairs. The pilots, John A. Macready and Oakley G. Kelly, flew a modified Fokker T-2 airplane equipped with new technologies such as an autopilot and a retractable landing gear.

5. In 1967, a massive earthquake struck the western part of Wyoming, registering 6.5 on the Richter scale. The quake caused extensive damage to buildings and infrastructure in and around the Grand Teton National Park. Fortunately, there were no fatalities or serious injuries reported, but the earthquake served as a reminder of the state's geologic activity and the potential risks associated with living in a seismically active area.