OnThisDay: May 7th
1789 - First US presidential inaugural ball (for George Washington; in New York City, NY)
1824 - Beethoven's 9th (Chorale) Symphony, premiered in Vienna
1847 - American Medical Association (AMA) organized in Philadelphia, PA.
1888 - George Eastman patented the "Kodak box camera"
1912 - Columbia University approved plans for awarding the Pulitzer Prize in several categories
1914 - US Congress established Mother's Day holiday
1915 - Lusitania sunk by German submarine; 1198 lives lost
1970 - Beatles "Long & Winding Road" released; becomes their last American release
1975 - US President Gerald R. Ford declared an end to "Vietnam Era"
1982 - IBM released PC-DOS version 1.1