June 23rd

World's oldest parliament, the Icelandic Parliament, the Alþingi (anglicised as Althing or Althingi), established.

United Kingdom votes to leave the European Union in their "Brexit" referundum.

Former Ku Klux Klansman Edgar Ray Killen was sentenced to 60 years in prison for the 1964 Mississippi slayings of three civil rights workers.

The U.S. Supreme Court upheld the University of Michigan's School of Law affirmative action policy.

Dr. Jonas Salk, the medical pioneer who developed the first polio vaccine, died.

Lorena Bobbitt of Prince William County, Va., sexually mutilated her husband, John, after he allegedly raped her.

John Gotti, convicted of racketeering charges, was sentenced in New York to life in prison.

An Air India jumbo jet crashes into the Atlantic Ocean. The crash was caused by a bomb planted by the Sikh militant group Babbar Khalsa. The incident, in which all 329 people aboard died, was the first bombing of a Boeing 747.

1st extraterrestrial message sent from Earth into space.

Richard Nixon and H. R. Haldeman discussed ways to obstruct the FBI's Watergate investigation. Revelation of this conversation spurred on Nixon's 1974 resignation.

Warren Burger was sworn in as Chief Justice of the U.S. Supreme Court.

The Antarctic Treaty comes into force. The treaty was the first arms control agreement signed during the Cold War. It sets Antarctica aside as a scientific preserve and prohibits military activities on the continent.

Gamal Abdel Nasser was elected president of Egypt.

The Senate joined the House in overriding President Harry S. Truman's veto of the Taft-Hartley Act, which allows the president to intervene in labor disputes.

Aviators Wiley Post and Harold Gatty took off from New York on the first round-the-world flight in a single-engine plane.

Choreographer-director Bob Fosse was born in Chicago.

The International Olympic Committee is founded at the Sorbonne, Paris, at the initiative of Baron Pierre de Coubertin.

The Democratic convention in Chicago nominated former President Grover Cleveland on the first ballot.

Christopher Latham Sholes received a patent for an invention he called a ''Type-Writer.''.