TODAY IN HISTORY

APRIL 13

1986:Jack Nicklaus, at 46, becomes the oldest golfer to win the Masters (his sixth). Exactly 11 years later, Tiger Woods will become the youngest at 21.

1818: Congressman Peter Wendover arranges for the new 13-stripe, 20-star American flag to fly over the U.S. Capitol for the first time.

1943: President Franklin Roosevelt dedicates the Thomas Jefferson Memorial on the third president’s 200th birthday.

1953: CIA director Allen Dulles authorizes the use of human subjects for a covert test of mind-control drugs such as LSD.

1964: Sidney Poitier is the first African American to win a best actor Academy Award for his role in Lilies of the Field.

1970: Astronaut Jack Swigert aboard Apollo 13 hears a bang and sees a warning light. He radios NASA: “Houston, we’ve had a problem here.” The moon landing mission is scrubbed, but the astronauts return to Earth safely.