Special Advisor Dulles
Apr 6 John Foster Dulles becomes advisor to US Secretary of State Acheson with a focus on the Indo-Pacific region
- Apr 8 "Miss Liberty" closes at Imperial Theater NYC after 308 performances
14th US Masters
Apr 9 14th US Masters Tournament, Augusta National GC: Jimmy Demaret becomes the first 3-time Masters champion by 2 strokes ahead of Australian Jim Ferrier
- Apr 9 4th Tony Awards: "The Cocktail Party" (play) & "South Pacific" (musical) win
Prince Rainier III
Apr 11 Prince Rainier III becomes ruler of Monaco
Film & TV History
Apr 17 Priscilla Presley's surname legally changed from Wagner to Beaulieu
- Apr 18 1st opening night-game, Cards beat Pirates, 4-2
- Apr 18 Polish Catholic church & government sign accord over relations
- Apr 18 Sam Jethroe is 1st African American to play for Boston Braves
- Apr 18 Yankees win 15-10 after trailing Red Sox 9-0 in 6th
- Apr 20 Baltimore, Maryland's Memorial Stadium opens - Orioles of International League
- Apr 23 1st major league day game completed under lights (Phils 6, Braves 5)
- Apr 23 Nationalist China evacuates Hainan Island
- Apr 23 NBA Championship: Minneapolis Lakers beat Syracuse Nationals, 110-95 to take series, 4 games to 2
- Apr 23 Stanley Cup Final, Olympia Stadium, Detroit, MI: Pete Babando scores Cup-winning goal in double overtime of Game 7 as Detroit Red Wings beat NY Rangers, 4-3 for a 4-3 series win
- Apr 24 Independent republic of South Molukkas declared
- Apr 24 Jordan formally annexes the West Bank
Peter Pan
Apr 24 Leonard Bernstein's musical "Peter Pan", starring Jean Arthur and Boris Karloff, opens at Imperial Theater, NYC; runs for 320 performances
- Apr 24 US President Harry Truman denies there are communists in the US government
- Apr 25 Chuck Cooper becomes the 1st African American to be drafted into the NBA (for Boston Celtics)
- Apr 25 Republik Maluku Selatan (also known as the Republic of the South Moluccas) declared on Ambon
- Apr 26 Last horse race at Havre de Grace Track in Md, is run
- Apr 26 U of Miami ends William & Mary straight tennis match victories at 82
- Apr 27 Musical revue "Tickets, Please" opens at Coronet Theater, later transferring to the Mark Hellinger Theatre, NYC; runs for 245 performances
- Apr 27 South Africa passes Group Areas Act segregating races