1. On February 26, 1869, the Wyoming territorial legislature passed a law allowing women the right to vote. Wyoming thus became the first US state or territory to grant women suffrage. This progressive move was a key factor in Wyoming being admitted as the 44th state in 1890.

2. Wyoming's first state governor, Francis E. Warren, was born on February 26, 1844, in Hinsdale, Massachusetts. Warren had a notable military career, serving as a Union general during the Civil War and commanding troops in campaigns against Native American tribes in the West. He was also a US Senator from Wyoming from 1890 to 1893 and from 1895 until his death in 1929.

3. The Battle of Powder River, a significant conflict between US Army forces and Sioux and Cheyenne warriors, occurred on February 26, 1876. The battle was part of the Great Sioux War of 1876-77 and resulted in a US Army victory. It was also the first major engagement of General George Crook's campaign against the Plains Indians.

4. On February 26, 1919, Wyoming ratified the 18th Amendment to the US Constitution, which established Prohibition. However, Wyoming lawmakers also quickly passed legislation allowing the sale of 3.2% beer, which was legal under state law until national Prohibition was repealed in 1933.

5. February 26, 1937, was a tragic day in Wyoming, as a massive natural gas explosion occurred near the town of Kinnear. The explosion killed thirteen people, eighteen cows, and destroyed several buildings. The cause of the explosion was methane gas that had accumulated in a nearby well and ignited. The disaster remains one of the deadliest gas explosions in US history.