Historical Events in April 1957

Apr 3 Samuel Beckett's play "Endgame" premieres in London as a French language production

Apr 3 USSR performs atmospheric nuclear test
Apr 4 Heitor Villa-Lobos' 10th Symphony premieres French Radio National Orchestra, conducted by the composer, in Paris
Apr 6 NYC ends trolley car service
Apr 6 USSR performs nuclear test (atmospheric tests)
Apr 6 Greek shipping tycoon Aristotle Onassis buys the Hellenic National Airlines (TAE) and founds Olympic Airlines.

Apr 7 21st US Masters Tournament, Augusta National GC: Doug Ford wins his only Masters, 3 strokes ahead of 3-time champion Sam Snead

Apr 9 Howard Hanson's "Song of Democracy" premieres in Washington, D.C.

Apr 10 "12 Angry Men", directed by Sidney Lumet, starring Henry Fonda and Lee J. Cobb, is released

Apr 11 Pablo Neruda arrested in Buenos Aires

Apr 11 Ryan X-13 Vertijet becomes 1st jet to take-off & land vertically
Apr 11 Britain agrees to Singaporean self-rule.
Apr 12 Jim Spalding set a 2,088 pin nine-game bowling record
Apr 12 USSR performs atmospheric nuclear test
Apr 13 Musical "Shinbone Alley", starring Eartha Kitt, opens at Broadway Theater NYC; runs for 49 performances
Apr 13 11th NBA Championship: Bost Celtics beat St Louis Hawks, 4 games to 3
Apr 13 11th Tony Awards: "Long Days Journey into the Night" & "My Fair Lady" win
Apr 13 Saturday postal delivery in US is temporarily halted due to lack of funds
Apr 14 Leah Neuberger wins her 8th women's singles ping pong championship
Apr 15 KTVI TV channel 2 in Saint Louis, MO (ABC) begins broadcasting
Apr 15 Saturday mail delivery restored in the US after Congress gives the Post Office $41 million
Apr 15 61st Boston Marathon won by John J Kelley in 2:20:05; course length changed
Apr 16 Stanley Cup Final, Montreal Forum, Montreal, Quebec: Dickie Moore has a goal and 2 assists as Montreal Canadiens beat Boston Bruins, 5-1 for a 4-1 series victory
Apr 16 USSR performs atmospheric nuclear test at Semipalatinsk, Kazakhstan
Apr 20 Yankee Bill Skowron becomes 3rd player to hit a ball out of Fenway

Apr 21 Pope Pius XII publishes encyclical Fidei Donum

Apr 22 All NL baseball teams integrate, John Irwin Kennedy becomes the 1st Black player for the Philadelphia Phillies
Apr 24 Chicago Cub pitchers walk NL record 9 Reds in 5th inning
Apr 25 1st experimental sodium nuclear reactor operated
Apr 25 Ibrahim Hashim forms Jordanian government
Apr 25 WUHY TV channel 35 in Philadelphia, PA (PBS) begins broadcasting
Apr 26 Jamestown, Virginia 350th Anniversary Festival opens
Apr 28 LPGA Western Open Women's Golf, Montgomery CC: Patty Berg wins her 6th WO by 1 stroke from Wiffi Smith
Apr 28 WSOC TV channel 9 in Charlotte, North Carolina (ABC) begins broadcasting
Apr 28 4th National Film Awards (India): "Kabuliwala" wins the Golden Lotus
Apr 29 1st military nuclear power plant dedicated at Fort Belvoir, Virginia