
1742 - 1825 1826 - 1849 1850 - 1876 1877 - 1900 1901 - 1925 1926 - 1950 1951 - 2001
1901 Stinking Water River is renamed Shoshone by the legislature.
1903 Tom Horn is hanged in Cheyenne, November 20. Buried in Boulder, Colorado.
1905 Governor's Mansion is ready for occupancy. State Fair is established at Douglas.
1906 Riverton town site is thrown open to settlers. First auto accident in Wyoming occurs. Devils Tower National Monument is established.
1909 Pathfinder Dam is completed. Park County is organized.
1910 Population, 145,965. Willis Van Devanter, Wyoming lawyer, is appointed to U.S. Supreme Court. Colonel Theodore Roosevelt visits Cheyenne Frontier Days Celebration.
1911 Campbell, Goshen, Hot Springs, Lincoln, Niobrara, Platte, Washakie Counties are organized.
1913 First automobile license in Wyoming is issued to J. M. Schwoob. A wolf is trained to carry mail over deep snows.
1915 Workmen's Compensation Law is enacted.
1916 Non-partisan judiciary law is passed. ‘Bill' Carlisle robs Union Pacific train. Sunrise is made model town by Colorado Fuel & Iron Company. Homestead tax exemption is increased to $2,500.
1917 Buffalo Bill dies in Denver. State Flower and State Flag are adopted by legislature. The state highway department is created. Jim Baker's cabin is moved to Cheyenne. Wyoming male citizens register for World War draft.
1918 Wyoming purchases $10,000,000 worth of Liberty bonds. State votes for prohibition three to one. Uranium discovered near Lusk, Wyoming.
1919 All Wyoming breweries suspend operations during national emergency. President Wilson makes several stops in Wyoming. “Bill” Carlisle, train bandit, escapes from penitentiary.
1920 Population 194,531.Transcontinental airmail planes are launched. Night airmail flying is inaugurated across Wyoming.
1921 Great oil well roars in at the Teapot Dome. Prize fighting is legalized in Wyoming. Teton and Sublette Counties are organized.
1922 Union Pacific stores six months' supply of coal along tracks as a precautionary measure in strike situation. Salt Creek oil field opened.
1923 Governor William B. Ross dies in office. Frances Warren Pershing Memorial Hospital is dedicated in Cheyenne. Ninety-nine coal miners die in explosion at Kemmerer mine.
1924 Senator Francis E. Warren obtains $3,000,000 appropriation for aid in night flying service. State receives $1,700,000 from oil royalties for schools. Nellie Tayloe Ross made governor, first woman to hold such office in the United States. (In 1933, she is appointed Director of the United States Mint, first woman to hold that office.)
1925 Teapot Dome oil case is tried before Judge Kennedy at Cheyenne; decision upholds Sinclair lease. Teapot Dome was the popular name for a scandal during the administration of U.S. President Warren G. Harding. The Teapot Dome incident became a symbol for supposed excesses and government graft and corruption. Origins of the scandal went back to the growth of federal conservation policy in the presidencies of Theodore Roosevelt, William Howard Taft, and Woodrow Wilson, specifically to the creation of naval petroleum reserves in Wyoming and California. These reserves were tracts of public land in which it was intended that oil should be kept in its natural reservoirs, or domes, for the future use of the Navy. Teapot Dome, near Casper, Wyo., acquired its name from a rock resembling a teapot that rose from the oil-bearing land. The legacy of Teapot Dome is an ambiguous one, although the scandal in its final outcome was a victory for honest government. 3,500,000 pounds of honey are produced in Wyoming. New Douglas airplane makes first flight across the state. Gros Ventre River is dammed by huge slide. State legislature votes ratification of the Colorado River Compact.
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