1. On April 22, 1898, the first issue of the Wyoming Pioneer newspaper was published in Newcastle, Wyoming. The newspaper was known for its strong support of the state's cattle and mining industries.

2. In 1910, on April 22, Frederick Weyerhaeuser purchased 900,000 acres of land in Wyoming, expanding his lumber empire to the western United States. The land would eventually become the Thunder Basin National Grassland.

3. On April 22, 1916, President Woodrow Wilson signed the National Park Service Organic Act, creating the National Park Service to oversee national parks and monuments. This included Wyoming's Yellowstone National Park.

4. On April 22, 1967, a massive snowstorm hit Cheyenne, Wyoming, dropping over 26 inches of snow in just two days. The storm caused widespread power outages and transportation difficulties.

5. In 2010, on April 22, Wyoming Governor Dave Freudenthal signed a bill into law that allowed for the creation of a lottery in Wyoming. Prior to this, Wyoming was one of only six states in the US without a lottery.