|Born||William Anthony Jackowski
September 27, 1914
North Walpole, New Hampshire
|Died||July 29, 1996
William Anthony Jackowski (September 27, 1914 - July 29, 1996) was a professional baseball umpire who worked in the National League from 1952 to 1968. Jackowski umpired 2,517 major league games in his 17 year career. He umpired in three World Series (1958, 1960 and 1966) and three All-Star Games (1956, 1959 and 1963).
Jackowski worked in six no-hitters during his career and was the home plate umpire for two: Lew Burdette's on August 18, 1960  and Ray Washburn's on September 18, 1968. He also officiated in the last two of Sandy Koufax's four no-hitters, as the first base umpire in Koufax's third no-hitter on June 4, 1964, and the second base umpire in Koufax's perfect game on September 9, 1965.
- "Musial is First in History Put Out by 2 Baseballs!". St. Petersburg Times. July 1, 1959. Retrieved July 5, 2012.
- "Retrosheet: St. Louis Cardinals 4, Chicago Cubs 1". July 1, 1959. Retrieved July 5, 2012.
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