British spy John André is court-martialed, found guilty and sentenced to death by hanging on September 29, 1780. André, an accomplice of Benedict Arnold, had been captured by Patriots John Paulding, David Williams and Isaac Van Wart six days earlier on September 23, after they found incriminating papers stashed in his boot.

On September 29, 1913, Rudolf Diesel, inventor of the engine that bears his name, disappears from the steamship Dresden while traveling from Antwerp, Belgium to Harwich, England. On October 10, a Belgian sailor aboard a North Sea steamer spotted a body floating in the water; upon further investigation, it turned out that the body was Diesel’s. There was, and remains, a great deal of mystery surrounding his death: It was officially judged a suicide, but many people believed (and still believe) that Diesel was murdered.

On September 29, 1939, Germany and the Soviet Union agree to divide control of occupied Poland roughly along the Bug River—the Germans taking everything west, the Soviets taking everything east.

An article in the New York Times claims that Russian citizens want the “American dream”: private property and a home of their own. The article was one of many that appeared during the 1950s and 1960s, as the American media attempted to portray the average Russian as someone not much different from the average American.

Stacy Allison of Portland, Oregon, becomes the first American woman to reach the summit of Mount Everest, which at 29,035 feet above sea level is the highest point on earth. Allison, a member of the Northwest American Everest Expedition, climbed the Himalayan peak using the southeast ridge route.

On September 29, 1995, voting rights advocate Willie Velasquez is posthumously awarded the Presidential Medal of Freedom. Velasquez and the organizations he founded are credited with dramatically increasing political awareness and participation among the Hispanic communities of the Southwestern United States.

On September 29, 2005, New York Times reporter Judith Miller is released from a federal detention center in Alexandria, Virginia, after agreeing to testify in the investigation into the leaking of the identity of covert CIA officer Valerie Plame. Miller had been behind bars since July 6, 2005, for refusing to reveal a confidential source and testify before a grand jury that was looking into the so-called Plame Affair. She decided to testify after the source she had been protecting, I. Lewis “Scooter” Libby, Vice President Dick Cheney’s chief of staff, signed a waiver giving her permission to speak.

On September 29, 2008, after Congress failed to pass a $700 billion bank bailout plan, the Dow Jones Industrial Average falls 777.68 points—at the time, the largest single-day point loss in its history.