Birthdays: 1722 Johann Ernst Bach 1775 Peter the Great of Russia 1912 Jackson Pollock 1936 Alan Alda Historical Events: 1915 US President Wilson refuses to prohibit immigration of illiterates 1956 Elvis Presley's first TV appearance 1986 25th Space Shuttle, Challenger 10, explodes Sports: 1922 American Pro Football Association renamed "National Football League" 1958 Dodger catcher Roy Campanella is paralyzed in an automobile wreck 1969 Barbara Jo Rubin becomes first woman jockey to win Religious Observances : Feast of St. Valerius, Feast of St. Charlemagne