- Apr 1 Montreal Maroons' Clint Benedict becomes first NHL goalie to record 3 straight playoff shutouts, in a 3-0 win against the visiting Victoria Cougars in Game 2 of the Stanley Cup Championship series
- Apr 2 Riots between Muslims & Hindus in Calcutta
Historic Invention
Apr 3 Second flight of a liquid-fueled rocket by Robert Goddard
Robert H. Goddard
- Apr 3 Italy establishes corp of force in order to break powerful unions
- Apr 4 Greek dictator Theodoros Pangalos elected president
- Apr 6 Stanley Cup Final, Montreal Forum, Montreal, Quebec: Montreal Maroons beat Victoria Cougars (WHL), 2-0 for a 3-1 series victory
- Apr 7 Forest fire burns 900 acres & kills 2 (San Luis Obispo California)
Event of Interest
Apr 7 Mussolini is shot at 3 times by Violet Gibson in Rome, she only hits him once in the nose
Benito Mussolini
Event of Interest
Apr 13 At 38, Walter Johnson pitches his 7th opening day shutout
Walter Johnson
- Apr 13 Cyclists without bicycle-tax-stamp rounded up in Amsterdam
- Apr 16 Book of the Month Club sends out its 1st selections "Lolly Willowes" & "Loving Huntsman" by Sylvia Townsend Warner
- Apr 18 Rhein Stadium opens in Dusseldorf, Germany
- Apr 19 30th Boston Marathon won by Canadian Johnny Miles in 2:25:40.4
- Apr 20 1st check sent by radio facsimile transmission across Atlantic
- Apr 22 Persia, Turkey & Afghanistan sign treaties of security
Music Premiere
Apr 25 Giacomo Puccini's opera "Turandot" premieres in Milan
Giacomo Puccini
- Apr 25 Persian cossack officer Reza Chan crowns himself Shah Palawi
- Apr 26 Germany & Russia sign neutrality peace treaty
- Apr 26 Karachai Autonomous Region forms in RSFSR (until 1943)
- Apr 27 In the Giants' 9-8 win over Phillies, Mel Ott, 17, 1st appearance
- Apr 29 France and US reach accord on repayment of WW I