1806 Attempting to stop a band of young Blackfoot Indians from stealing his horses, Meriwether Lewis shoots an Indian in the stomach in Montana. He and his companions (he was detached from the main body of the Corps of Discovery at the time) then flea in a ride that takes them over 100 miles, nearly non stop.
1840 Ranald Slidell Mackenzie, cavalryman, born. Mackenzie proved to be a very effective leader and is responsible for the victory at the Dull Knife Fight. However, even at that time he was descending into insanity, which would ultimately cause him to spend his final years insane.
1901 First smelter opens at Grand Encampment. Attribution: Wyoming State Historical Society.
1920 William Jennings Bryan spoke in Casper. Attribution: Western History Center.
1922 Grasshopper infestation darkened Sheridan's skies. Attribution: Wyoming State Historical Society.
1922 First recorded ascent of Mt.Moran. Attribution: Wyoming State Historical Society.
1940 Bugs Bunny made his debut in the Warner Bros. animated cartoon "A Wild Hare."
1964 Hilltop National Bank in Casper acquires Federal Deposit insurance, essentially marking the commencement of the bank's operations.
1995 The Korean War Veterans Memorial was dedicated in Washington, D.C.
2013 Today is National Day of the Cowboy for 2013. Wyoming is the first state to recognize the day.