Today is the 273rd day of the year, with 92 days remaining until the end of the year.
1882 - The world's first commercial hydroelectric power plant, begins operation on the Fox River in Appleton, Wisconsin.
1888 - Jack the Ripper kills his third and fourth victims, Elizabeth Stride and Catherine Eddowes.
1904 - Hubert Cecil Booth patents the vacuum cleaner.
1927 - Babe Ruth becomes the first baseball player to hit 60 home runs in a season.
1935 - The Hoover Dam, astride the border between the U.S. states of Arizona and Nevada is dedicated.
1941 - German Einsatzgruppe C complete the Babi Yur massacre, in Kiev, Ukraine.
1947 - The World Series, featuring the New York Yankees and the Brooklyn Dodgers, is televised for the first time.
1962 - James Meredith enters the University of Mississippi, defying segregation.
1968 - The Boeing 747 is rolled out and shown to the public for the first time at the Boeing Everett Factory.
1972 - Roberto Clemente records the 3,000th and final hit of his career.
1975 - The AH-64 Apache makes its first flight.
1980 - Ethernet specifications are published Xerox working with Intel and Digital Equipment Corporation.
1982 - Cyanide-laced Tylenol kills six people in the Chicago area. Seven are killed in all.
1986 - Mordechai Vanunu, who revealed details of Isreal's covert nuclear program to British media, is kidnapped in Rome, Italy by the Israeli Mossad.
2004 - The first images of a lie giant squid in its natural habitat are taken 600 miles south of Tokyo, Japan.
2004 - The AIM-54 Phoenix, the primary missile for the F-14 Tomcat, is retired from service. Almost two years later, the aircraft itself is retired.
James Dean - American film star, dies in a car accident at the age of 24 in 1955. His accident was caused while he was driving his Porsche 550 Spyder on route 466 east of Cholame, San Luis Obispo County, when a black-and-white 1950 Ford Custom Tudor coupe driven by Cal Polytech student Donald Turnupseed, crossed into Dean's lane while taking a fork to State Route 41. The two cars collided, with Dean flying out of his car, and most likely slamming his head on the grill of the other car, had multiple fractures of the jaw, arms and legs, as well as massive internal bleeding.