1. On January 18, 1890, Wyoming became the 44th state in the United States. It was the first state to grant women the right to vote in 1869, and its constitution was the first to explicitly include a provision granting women the right to vote.

2. On January 18, 1946, the US Army Air Force (USAAF) lost a B-17 bomber in the Snowy Range Mountains near Laramie, Wyoming. The 14 crew members were killed in the crash and their remains were discovered in 1997.

3. January 18, 1913 was the birthdate of Thomas C. Watson, who was born in Cowley, Wyoming. He went on to become a prominent author and Pulitzer Prize-winning journalist, known for his coverage of the civil rights movement.

4. In 1940, the city of Casper experienced one of the deadliest blizzards in Wyoming history on January 18-20. The city was buried in over 30 inches of snow, which led to several fatalities and millions of dollars worth of property damage.

5. On January 18, 2008, a natural gas pipeline explosion near Evanston, Wyoming killed two workers and injured several others. The explosion was caused by a rupture in the pipeline due to corrosion.