from east to west. 1934 – The strongest surface wind gust in the world at the time of 231 mph, is measured on the summit of Mount Washington, New Hampshire. It has since been surpassed. 1934 – The U.S. Auto-Lite strike begins, culminating in a five-day melee between Ohio National Guard troops and 6,000 strikers and picketers. 1937 – Sir Frank Whittle ground-tests the first jet engine designed to power an aircraft, at Rugby, England. 1945 – U.S. President Franklin D. Roosevelt dies in office; Vice President Harry S. Truman becomes President upon Roosevelt's death. 1945 – World War II: The U.S. Ninth Army under General William H. Simpson crosses the Elbe River astride Magdeburg, and reaches Tangermünde—only 50 miles from Berlin. 1955 – The polio vaccine, developed by Dr. Jonas Salk, is declared safe and effective. 1961 – Space Race: The Soviet cosmonaut Yuri Gagarin becomes the first human to travel into outer space and perform the first crewed orbital flight, Vostok 1. 1963 – The Soviet nuclear-powered submarine K-33 collides with the Finnish merchant vessel M/S Finnclipper in the Danish straits. 1970 – Soviet submarine K-8, carrying four nuclear torpedoes, sinks in the Bay of Biscay four days after a fire on board. 1980 – The Americo-Liberian government of Liberia is violently deposed. 1980 – Transbrasil Flight 303, a Boeing 727, crashes on approach to Hercílio Luz International Airport, in Florianópolis, Brazil. Fifty-five out of the 58 people on board are killed. 1980 – Canadian runner and athlete, Terry Fox begins his Marathon of Hope Run in St. John's, NF 1981 – The first launch of a Space Shuttle (Columbia) takes place: The STS-1 mission. 1983 – Harold Washington is elected as the first black mayor of Chicago. 1990 – Jim Gary's "Twentieth Century Dinosaurs" exhibition opens at the Smithsonian Institution National Museum of Natural History in Washington, D.C. He is the only sculptor ever invited to present a solo exhibition there. 1992 – The Euro Disney Resort officially opens with its theme park Euro Disneyland; the resort and its park's name are subsequently changed to Disneyland Paris. 1999 – United States President Bill Clinton is cited for contempt of court for giving "intentionally false statements" in a civil lawsuit; he is later fined and disbarred. 2002 – A suicide bomber blows herself up at the entrance to Jerusalem's Mahane Yehuda Market, killing seven people and wounding 104.