1973 events in history

Jan 1 Denmark, the United Kingdom, and Ireland are admitted into the European Economic Community
Jan 7 Mark Essex fatally shoots 10 people and wounds 13 others at Howard Johnson's Hotel in New Orleans, Louisiana, before being shot to death by police officers
Jan 8 Soviet space mission Luna 21 is launched
Jan 8 Watergate scandal: The trial of seven men accused of illegal entry into Democratic Party headquarters at Watergate begins
Jan 11 Major League Baseball owners vote in approval of the American League adopting the designated hitter position
Jan 14 Elvis Presley's concert Aloha from Hawaii is broadcast live via satellite, and sets the record as the most watched broadcast by an individual entertainer in television history
Jan 15 Vietnam War: Citing progress in peace negotiations, President Richard Nixon announces the suspension of offensive action in North Vietnam
Jan 22 The Supreme Court of the United States delivers its decisions in Roe v. Wade and Doe v. Bolton, legalizing elective abortion in all fifty states
Jan 22 The crew of Apollo 17 addresses a joint session of Congress after the completion of the final Apollo moon landing mission
Jan 22 A chartered Boeing 707 explodes in flames upon landing at Kano Airport, Nigeria, killing 176
Jan 23 A volcanic eruption devastates Heimaey in the Vestmannaeyjar chain of islands off the south coast of Iceland
Jan 23 President Richard Nixon announces that a peace accord has been reached in Vietnam
Jan 27 The Paris Peace Accords officially end the Vietnam War. Colonel William Nolde is killed in action becoming the conflict's last recorded American combat casualty
Feb 9 Biju Patnaik of the Pragati Legislature Party is elected leader of the opposition in the state assembly in Odisha, India
Feb 11 Vietnam War: First release of American prisoners of war from Vietnam takes place
Feb 21 Over the Sinai Desert, Israeli fighter aircraft shoot down Libyan Arab Airlines Flight 114 jet killing 108
Feb 22 Cold War: Following President Richard Nixon's visit to the People's Republic of China, the two countries agree to establish liaison offices
Feb 27 The American Indian Movement (AIM) occupies Wounded Knee, South Dakota
Mar 1 Black September storms the Saudi embassy in Khartoum, Sudan, resulting in the assassination of three Western hostages
Mar 17 The Pulitzer Prize-winning photograph Burst of Joy is taken, depicting a former prisoner of war being reunited with his family, which came to symbolize the end of United States involvement in the Vietnam War
Mar 24 Kenyan athlete Kip Keino defeats Jim Ryun at the first-ever professional track meet in Los Angeles
Mar 29 Vietnam War: The last United States combat soldiers leave South Vietnam
Mar 29 Operation Barrel Roll, a covert US bombing campaign in Laos to stop communist infiltration of South Vietnam, ends
Apr 1 Project Tiger, a tiger conservation project, is launched in the Corbett National Park, India
Apr 2 The Liberal Movement breaks away from the Liberal and Country League in South Australia
Apr 2 Launch of the LexisNexis computerized legal research service
Apr 3 Martin Cooper of Motorola makes the first handheld mobile phone call to Joel S. Engel of Bell Labs, though it took ten years for the DynaTAC 8000X to become the first such phone to be commercially released
Apr 4 The World Trade Center in New York is officially dedicated
Apr 4 A Lockheed C-141 Starlifter, dubbed the Hanoi Taxi, makes the last flight of Operation Homecoming
Apr 6 The American League of Major League Baseball begins using the designated hitter
Apr 6 Launch of Pioneer 11 spacecraft
Apr 10 A British Vickers Vanguard turboprop aircraft crashes in a snowstorm at Basel, Switzerland killing 104 people
Apr 17 George Lucas begins writing the treatment for The Star Wars
Apr 19 The Portuguese Socialist Party is founded in the German town of Bad Münstereifel
Apr 30 Watergate scandal: U.S. President Richard Nixon announces that top White House aides H. R. Haldeman, John Ehrlichman and others have resigned
May 3 The 108-story Sears Tower in Chicago is topped out at 1,451 feet as the world's tallest building
May 5 Secretariat (horse) wins the 1973 Kentucky Derby in 1:59 2/5, a still standing record
May 8 A 71-day standoff between federal authorities and the American Indian Movement members occupying the Pine Ridge Reservation at Wounded Knee, South Dakota ends with the surrender of the militants
May 11 Citing government misconduct, Daniel Ellsberg has charges for his involvement in releasing the Pentagon Papers to The New York Times dismissed
May 14 Skylab, the United States' first space station, is launched
May 17 Watergate scandal: Televised hearings begin in the United States Senate
May 25 HNS Velos (D-16), while participating in a NATO exercise and in order to protest against the dictatorship in Greece, anchored at Fiumicino, Italy, refusing to return to Greece
May 29 Tom Bradley is elected the first black mayor of Los Angeles, California
May 31 The United States Senate votes to cut off funding for the bombing of Khmer Rouge targets within Cambodia, hastening the end of the Cambodian Civil War
Jun 3 A Soviet supersonic Tupolev Tu-144 crashes near Goussainville, France, killing 14, the first crash of a supersonic passenger aircraft
Jun 9 In horseracing, Secretariat wins the Triple Crown
Jun 20 Ezeiza massacre in Buenos Aires, Argentina. Snipers fire upon left-wing Peronists. At least 13 are killed and more than 300 are injured
Jun 21 In handing down the decision in Miller v. California 413 US 15, the Supreme Court of the United States establishes the Miller Test for obscenity in U.S. law
Jun 23 A fire at a house in Hull, England which kills a six year old boy is passed off as an accident; it later emerges as the first of 26 deaths by fire caused over the next seven years by arsonist Peter Dinsdale
Jun 24 The UpStairs Lounge arson attack took place on June 24, 1973 at a gay bar located on the second floor of the three-story building at 141 Chartres Street in the French Quarter of New Orleans, Louisiana. Thirty-two people died as a result of fire or smoke inhalation