1863 Territory of Idaho created.
1866 The War Department issued orders to establish a fort south of Laramie. It was initially named Fort John Buford but was renamed Fort Sanders on September 5, 1866. Attribution: On This Day.
1890 Wyoming admitted to the Union.
1933 As noted on this thread at Society of the Military Horse • View topic - Long Cavalry Maneuvers. Col Roche S. Mentzer, Commanding Officer of the 115th Cavalry became ill at Fox Park, in the Snowy Range, and died. That year, annual training had consisted of a protracted mounted march which took the mustered unit from Cheyenne to northern Colorado, and then back into the Snowy Range.
Col. Mentzer, in civilian life, was a lawyer in Cheyenne.
2012 A terrible vehicle v wagon accident occurs following the Central Wyoming Fair & Rodeo parade. See: One woman remains in hospital after horse-drawn vehicle accident in Casper
Yesterday the State Historical Society posted this query to their Facebook page:
The answer here would be not much. Does your community do anything?