1812 Robert Stuart and a small party of Astorians crossed South Pass, making them the first Euro-Americans to do so. Attribution: Wyoming State Historical Society.
1844 Louis Riel, Metis leader, Montana school teacher, was born, the eldest of eleven children, in a log cabin near St-Boniface, Manitoba.
1861 The first telegraph line linking West & East coasts of the US was completed. The route went along the Oregon Trail.
1885 The Canadian Judicial Committee of the Privy Council rules against the appeal of Louis Riel's sentence resulting from the Metis Rebellion..
1943 Faced with the shortages caused by wartime, the Green River Sportsman's Club discussed ammunition shortage situation and a rumored black market operating in the vicinity. Attribution: Wyoming State Historical Society.
1964 Richard Nixon campaigned in Wyoming for Barry Goldwater. Attribution: On This Day.
If anyone has the specifics on this item, I'd really appreciate knowing them.