1848 - The dental chair was patented by M. Waldo Hanchett.
1877 - Thomas Edison wrote to the president of the Telegraph Company in Pittsburgh, PA. The letter stated that the word, "hello" would be a more appropriate greeting than "ahoy" when answering the telephone.
1911 - The product Crisco was introduced by Procter & Gamble Company.
1914 - The Panama Canal was officially opened to commercial traffic as an American ship sailed from the Atlantic to the Pacific Ocean.
1935 - Will Rogers and Wiley Post were killed in an airplane crash in near Point Barrow, AK.
1939 - "The Wizard of Oz" premiered in Hollywood, CA. Judy Garland became famous for the movie's song "Somewhere Over the Rainbow."
1949 - In San Francisco, a stunt leap off the Golden Gate Bridge was performed for the first time.
1961 - East German workers began construction of the Berlin Wall.
1970 - Mrs. Pat Palinkas became the first woman to ‘play’ in a pro football game when she held the ball for the Orlando, FL, Panthers.
1983 - Six-month-old Lisa Harap of Queens Village, NY became the youngest identifiable living person to appear on a cover of "TIME" magazine.
1994 - The U.S. Social Security Administration became an independent government agency. It had been a part of the Department of Health and Human Services agency.