1804 The Corps of Discovery departed from St. Charles, Missouri.
1843 A wagon train, made up of 1,000 settlers and 1,000 head of cattle left Independence, Missouri.on the "Great Emigration," down the Oregon Trail.
1882 Ft. Sanders abandoned.
1891 The Lincoln Land Company purchased the land upon which Moorcroft would be built.
1902 Medicine Bow Forest Reserve established by President Theodore Roosevelt.
1918 Four hundred Belgian soldiers passed through Wyoming over the Union Pacific Railroad on their way to the war in Europe.
1942 President Roosevelt orders the Selective Service registration of all male Americans residents who reach the age of 18 or 19 before June 30th or has reached the age of 20 since December 31, 1941.
1965 John Terril reappointed U.S. Marshall.
1978 The Virginian Hotel, and the Riverton Railroad Depot added to the National Registry of Historic Places.
1987 The U.S. Post Offices in Powell and Greybull added to the National Register of Historic Places.
1987 Special Session of the Legislature concludes.
1991 The 1022nd Medical Company returned to State Control.