the first women's federal prison in the United States. 1937 – The Commonwealth of the Philippines holds a plebiscite for Filipino women on whether they should be extended the right to suffrage; over 90% would vote in the affirmative. 1939 – The 1939–40 New York World's Fair opens. 1939 – NBC inaugurates its regularly scheduled television service in New York City, broadcasting President Franklin D. Roosevelt's N.Y. World's Fair opening day ceremonial address. 1943 – World War II: The British submarine surfaces near Huelva to cast adrift a dead man dressed as a courier and carrying false invasion plans. 1945 – World War II: Führerbunker: Adolf Hitler and Eva Braun commit suicide after being married for less than 40 hours. Soviet soldiers raise the Victory Banner over the Reichstag building. 1945 – World War II: Stalag Luft I prisoner-of-war camp near Barth, Germany is liberated by Soviet soldiers, freeing nearly 9000 American and British airmen. 1947 – In Nevada, Boulder Dam is renamed Hoover Dam. 1948 – In Bogotá, Colombia, the Organization of American States is established. 1956 – Former Vice President and Democratic Senator Alben Barkley dies during a speech in Virginia. 1957 – Supplementary Convention on the Abolition of Slavery entered into force. 1961 – K-19, the first Soviet nuclear submarine equipped with nuclear missiles, is commissioned. 1963 – The Bristol Bus Boycott is held in Bristol to protest the Bristol Omnibus Company's refusal to employ Black or Asian bus crews, drawing national attention to racial discrimination in the United Kingdom. 1973 – Watergate scandal: U.S. President Richard Nixon announces that White House Counsel John Dean has been fired and that other top aides, most notably H. R. Haldeman and John Ehrlichman, have resigned. 1975 – Fall of Saigon: Communist forces gain control of Saigon. The Vietnam War formally ends with the unconditional surrender of South Vietnamese president Dương Văn Minh. 1980 – Beatrix is inaugurated as Queen of the Netherlands following the abdication of Juliana. 1980 – The Iranian Embassy siege begins in London. 1982 – The Bijon Setu massacre occurs in Calcutta, India. 1993 – CERN announces World Wide Web protocols will be free. 1994 – Formula One racing driver Roland Ratzenberger is killed in a crash during the qualifying session of the San Marino Grand Prix run at Autodromo Enzo e Dino Ferrari outside Imola, Italy. 1999 – Neo-Nazi David Copeland carries out the last