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All female survey crew - Minidoka Project, Idaho 1918
 Idaho Timeline History
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1743: Pierre De la Verendyre discovered Rocky Mountains
1803: The Louisiana Territory was purchased by the U. S. from France
1805: Captains Lewis and Clark discovered Idaho at Lemhi Pass
1809: Britain opened first trading post; Kullyspell House was built
1810: Fort Henry, the first American trading post established
1811: Pacific Fur company expedition explored Snake River Valley; discovered Boise Valley
1820: Treaty between Spain and U. S. established southern boundary of Idaho at 42nd parallel
1823: Battle fought in Lemhi Valley between Snake River explorers and Piegan Indians
1824: U. S. received Northwest Territory from Russia in treaty
1832: First crossing of Rocky Mountains in covered wagons; battle of Pierre's Hole between fur trappers and Grosventre Indians
1843: Oregon Trail established in Idaho
1852: Gold discovered on the Pend Oreille River
1854: Twenty-one immigrants massacred in Boise Valley by Snake River Indians
1863: Idaho Territory organized; Bear River Massacre, the West's largest slaughter of Indians, occurred
1865: Boise became capital of Idaho
1877: Nez Perce Indian Wars took place
1878: Bannock Indian Wars were fought
1880: Lead and silver lodes were discovered in Wood River area
1890: Idaho became 43rd state on July 3; first session of Idaho legislature met
1897: Bitterroot Forest Reserve was established to protect bison
1906: Largest sawmill in U. S. began operations at Potlatch
1910: Forest fires consumed one-sixth of Idaho's forests, destroyed many communities
1915: Arrowrock Dam completed
1917: Statewide prohibition went into effect
1924: Craters of the Moon National Monument established; Black Canyon Dam completed
1931: State income tax law adopted
1934: Idaho became number one in U.S. in silver production
1935: Statewide prohibition repealed
1942 Japanese-Americans placed in internment camps at Hunt
1949: National Reactor Testing Station near Arco established
1955: Arco, Idaho, became first town lit by atomic power
1960: Seven-month strike by miners at Bunker Hill Mine; forest fires in Hells Canyon and Idaho City area
1961: Ernest Hemingway died in Ketchum
1972: Sunshine Mine fire in Kellogg killed 91
1976: Teton Dam collapsed, killing 11 and forced over 300,000 to evacuate
1980: Northern Idaho covered with layer of volcanic ash from eruption of Mt. St. Helens in Washington; 18 hour riot at Idaho State Prison caused $2 million in damages
1983: Earthquake in Lost River Valley killed two and caused millions of dollars in damage
1985: Grasshopper infestation destroyed great areas of farmlands
1989: Forest fires burned thousands of acres in south central Idaho; Idaho lottery began
1991: Kirby Dam collapsed, electrical power cut off to residents, arsenic, mercury, cadmium dumped into Boise River
1992: Fire caused $3.2 million in damages to State Capitol; worst forest fire season in Idaho's history
1994: Wildfires burned approximately 750,000 acres; Picabo Streeet won Olympic silver medal in downhill skiing
1995: Picabo Street became first American to win World Cup downhill title
1996: Northern Idaho hit with major floods
1997: New Year's day floods occured in southwest Idaho
2000: 559,183 acres burned in forest fires
2001: 24 counties declared drought disaster areas
2003: Longest legislative session in history lasted 118 days
2005: Nez Perce water agreement ratified, tribe received annual rights to 50,000 acre-feet water from Clearwater River and $80 million cash.
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