1) On August 18, 1876, the Wyoming Territory was officially organized by an act of the US Congress. This paved the way for Wyoming to become the 44th state in the Union in 1890.

2) Wyoming's first female legislator, Estelle Reel, was born on August 18, 1863. Reel was elected to the Wyoming legislature in 1910 and went on to serve as Wyoming's Superintendent of Public Instruction from 1915 to 1923.

3) The famous outlaw Butch Cassidy was rumored to have robbed a bank in Rawlins, Wyoming on August 18, 1899. While Cassidy's involvement in the robbery has never been proven, the incident helped to cement his reputation as a notorious criminal.

4) On August 18, 1934, the first portion of the Lincoln Highway was dedicated in Wyoming. This historic road ran from New York to San Francisco and was an important route for cross-country travel in the early 20th century.

5) Wyoming's Teton County was established on August 18, 1921. Home to the famous Jackson Hole ski resort and much of Grand Teton National Park, Teton County is now one of Wyoming's most popular tourist destinations.