The Hayden expedition in Wyoming as photographed by William Henry Jackson
1742-1743: Francois Louis Verendyne entered
Wyoming, discovered Big Horn Mountains 1803: Louisiana Purchase completed, included
present day Wyoming 1806: American John Colter discovered
Yellowstone, named area "Colter's Hell'; explored Teton
Mountains 1812: Robert Stuart discovered South Pass through
Rocky Mountains 1822: General William Ashley established trading
post on Yellowstone River 1827: Ashley's group took first wheeled vehicle,
a four-pounder cannon, across South Pass 1830: Kit Carson arrived in Wyoming 1832: Capt. B. L. E. Bonneville led first wagons
through South Pass; established Fort Bonneville 1833: Bonneville discovered oil near Wind River
Mountains 1834: First permanent trading post, Ft. Laramie,
established 1842: Fort Bridger established; Capt. Fremont led
expedition to Wyoming, discovered Fremont Peak; Gold
discovered near South Pass 1849: U. S. purchased Fort Laramie 1854: Grattan Massacre occurred near Fort Laramie
1867: Cheyenne founded; Transcontinental Railroad
entered Wyoming 1868: Wyoming Territory created 1869: Women received right to vote 1872: Yellowstone Park became first national park
1877: Arapahoe Indians moved to Wind River
Reservation 1885: Chinese Massacre occurred at Rock Springs
1890: Wyoming admitted into Union as 44th state
1897: First Cheyenne Frontier Days celebrated 1906: Devils Tower established, first national
monument in U. S. 1918: Prohibition passed; uranium discovered near
Lusk 1923: Kemmerer mine explosion killed ninety-nine
1925: Nellie Tayloe Ross became first woman
governor in U. S.; Teapot Dome Scandal occurred 1933: Nellie Tayloe Ross named first woman
director of U. S. Mint 1949: Blizzard paralyzed entire state 1978: World's largest radio telescope built on
Jelm Mountain 1979 - 1980: Cheyenne received 121 inches of show
1988: Devastating fire in Yellowstone National
Park burned more than one million acres 2000: Dick Cheney elected Vice President of U.S.
1742-1743: Francois Louis Verendyne entered
Wyoming, discovered Big Horn Mountains 