WHAT ALL HAPPENED MARCH TO MAY 1973
Find out what all happened March to May 1973

The Portuguese Socialist Party is founded in the German town of Bad Münstereifel. (19. April 1973)

Operation Barrel Roll, a covert US bombing campaign in Laos to stop communist infiltration of South Vietnam, ends. (29. March 1973)

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. (3. April 1973)

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. (8. May 1973)

George Lucas begins writing the treatment for The Star Wars. (17. April 1973)

Black September storms the Saudi embassy in Khartoum, Sudan, resulting in the assassination of three Western hostages. (1. March 1973)

Launch of Pioneer 11 spacecraft. (6. April 1973)

The American League of Major League Baseball begins using the designated hitter. (6. April 1973)

Launch of the LexisNexis computerized legal research service. (2. April 1973)

Tom Bradley is elected the first black mayor of Los Angeles, California. (29. May 1973)

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. (31. May 1973)

Kenyan athlete Kip Keino defeats Jim Ryun at the first-ever professional track meet in Los Angeles. (24. March 1973)

Watergate scandal: Televised hearings begin in the United States Senate. (17. May 1973)

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. (25. May 1973)

Skylab, the United States' first space station, is launched. (14. May 1973)

Secretariat (horse) wins the 1973 Kentucky Derby in 1:59 2/5, a still standing record. (5. May 1973)

Project Tiger, a tiger conservation project, is launched in the Corbett National Park, India. (1. April 1973)

A Lockheed C-141 Starlifter, dubbed the Hanoi Taxi, makes the last flight of Operation Homecoming. (4. April 1973)

The Pulitzer Prize-winning photograph Burst of Joy is taken, depicting a former prisoner of war being reunited with his family. (17. March 1973)

Citing government misconduct, Daniel Ellsberg has charges for his involvement in releasing the Pentagon Papers to The New York Times dismissed. (11. May 1973)