- Apr 1 1st radio tube made of metal announced, Schenectady, NY
Historic Invention
Apr 2 Scottish physicist Robert Watson-Watt receives a British patents for RADAR
- Apr 3 Yasuo Ikenada runs world record marathon (2:26:44)
- Apr 5 Croatian Farmers Party wins Yugoslavian election
- Apr 6 H Levitt sinks 499 basketball free throws, misses & sinks 371 more
- Apr 8 2nd Augusta National Invitation Tournament (Masters) Golf: Gene Sarazen wins Monday playoff with Craig Wood by 5 strokes
Music History
Apr 8 Béla Bartók's 5th String quartet premieres in Washington, D.C.
- Apr 8 Works Progress Administration approved by Congress
Sports History
Apr 9 Stanley Cup Final, Montreal Forum, Montreal, Quebec: Montreal Maroons beat Toronto Maple Leafs, 4-1 for 3-0 series sweep; Maroons last defunct team to win the Cup
- Apr 10 Vaughan Williams' 4th Symphony premieres in London
- Apr 12 Germany prohibits publishing "not-Arian" writers
- Apr 12 Royal Proclamation sets design of Canada's new Jubilee Silver Dollar
- Apr 12 First flight of the Bristol Blenheim
- Apr 14 Black Sunday: Severe dust storm ravages the US Midwest, led to the region being named "the Dust Bowl"
- Apr 15 39th Boston Marathon won by John A Kelley in 2:32:07.4
- Apr 16 1st radio broadcast of "Fibber McGee & Molly"
- Apr 17 Provincial-National elections (Musserts NSB achieves 7.9%, 44 chairs)
- Apr 18 Gen Sarazen's double eagle on 15th, wins him his 2nd Masters
- Apr 18 Netherlands election (Musserts NSB wins 8% of vote)
- Apr 20 "Your Hit Parade" begins broadcasting (becomes #1 quickly)
- Apr 21 King Boris of Bulgaria forbids all political parties
- Apr 23 Polish Constitution of 1935 is adopted
- Apr 26 Frank Boucher is given NHL's Lady Byng Trophy for sportsmanship permanently for winning it 7 of 11 years
- Apr 27 Brussels World Exposition opens
- Apr 27 Yanks pull a 1st inning triple-play & beat Philadelphia A's 9-8
- Apr 28 Moscow underground railway opens (81 km long)
- Apr 30 World Congress for Women's Rights concludes in Istanbul