On This Day, April 16: Wayne Gretzky announces retirement from NHL

April 16 (UPI) -- On this date in history:

In 1862, the U.S. Congress abolished slavery in the District of Columbia.

In 1912, as crowds gathered outside its New York City offices, the White Star Line denied that it was withholding information on the sinking of RMS Titanic.

File Photo courtesy National Archives

In 1947, a fire aboard the French freighter Grandcamp in the Texas City, Texas, port on Galveston Bay ignited ammonium nitrate and other explosive materials in the ship's hold, causing a massive blast that destroyed much of the city and killed nearly 600 people.

In 1963, the Rev. Martin Luther King Jr. wrote "Letter from Birmingham Jail" while imprisoned in Alabama for protesting segregation.

In 1972, Apollo 16 blasted off on an 11-day moon mission with three astronauts aboard.

In 1990, Dr. Jack Kevorkian helped in his first assisted suicide. In December, he was charged with murder for the death of a woman with Alzheimer's disease, who died using his so-called suicide machine in June.

In 1991, the first Jewish settlement under the Israeli government opened in the occupied territories, defying a U.S. request to stop settlement activity in the West Bank and Gaza Strip.

In 1999, hockey legend Wayne Gretzky announced his retirement from the NHL after 21 years. He was inducted into the NHL Hall of Fame in November without having to go through the usual three-year waiting period.

In 2002, Dutch Prime Minister Wim Kok and members of his government resigned after a report faulted them, along with the United Nations, for failing to prevent the 1995 massacre of 7,500 Muslim men and boys at Srebrenica, Bosnia.

UPI File Photo

In 2007, Seung-Hui Cho, a senior at Virginia Tech, went on a campus shooting rampage, killing 32 people before killing himself.

In 2011, a vicious rash of tornadoes tore through 14 U.S. states over three days, leaving more than 40 people dead and many others homeless.

In 2018, Kendrick Lamar became the first rapper to win the Pulitzer Prize for music for his album Damn.

In 2021, Raul Castro, brother of the late Cuban leader Fidel Castro, announced he was stepping down as head of Cuba's Communist Party.

In 2023, the United Nations' World Food Program announced it was suspending operations in Sudan one day after three of its staff members were killed in the Darfur region after an apparent coup attempt caused heavy fighting to break out across the nation.