1. Wyoming Territory was established on February 18, 1861: President James Buchanan signed a bill creating the Wyoming Territory, which would eventually become the 44th state in 1890.

2. First woman jury in the United States was established in Laramie on February 18, 1870: The first woman jury in the United States was established in Laramie, Wyoming. The jury consisted of twelve women and was empanelled to decide a case of larceny.

3. The first Persian lamb coat was made by John C. Wilson on February 18, 1929: John C. Wilson, a rancher in Wyoming, was the first to breed and raise Persian lambs for the purpose of making fur coats.

4. The Fossil Cabin was completed on February 18, 1932: The Fossil Cabin, located near Medicine Bow, Wyoming, was built entirely out of dinosaur bones. The cabin is still standing and is listed on the National Register of Historic Places.

5. The University of Wyoming's Geological Museum opened on February 18, 1950: The Museum was established to educate visitors about the geologic history of Wyoming and to showcase its diverse fossil record. It is one of the largest natural history museums in the western United States.