1. Statehood Day: Wyoming was officially admitted to the Union on December 10, 1890, but December 1 is celebrated as Statehood Day in Wyoming. This marks the day when President Benjamin Harrison signed the proclamation officially declaring Wyoming a state.

2. Famous Birthdays: December 1 is the birthday of several notable Wyomingites, including former Governor Mike Sullivan (1940), Olympic gold medalist Rulon Gardner (1971), and country music singer Chris LeDoux (1948).

3. Native American Treaties: On December 1, 1842, the United States signed a treaty with various Native American tribes, including the Sioux, Cheyenne, Arapaho, and Crow. The treaty granted access to their lands for westward expansion but also promised them protection and compensation.

4. First Female Governor: Nellie Tayloe Ross was born on November 29, 1876, but made history on December 1, 1924, when she became the first female governor in the United States. She was elected as Wyoming's Governor following the death of her husband and was re-elected to a full term before going on to serve as the first female director of the U.S. Mint.

5. Capital City Relocation: On December 1, 1869, the territorial legislature voted to move the capital city of Wyoming from Cheyenne to Laramie. This decision was highly controversial and caused a great deal of political debate, but Laramie remained the capital until 1875 when Cheyenne regained the title.