1934: U.S.S.R.: The nonaggression treaties between the U.S.S.R. and Estonia, Latvia, and Lithuania is renewed until 1945.
April 4th, 1939 (TUESDAY)
UNITED KINGDOM: Destroyer HMS Kashmir is launched.
U.S.A.: The US Navy orders a prototype of the new Brewster XSB2A-1 which later becomes the SB2A Buccaneer scout-bomber. (23)
Glenn Miller and His Orchestra record his theme song, "Moonlight Serenade," for Bluebird Records. Previously, the Miller theme had been "Gone with the Dawn" and, before that, "Now I Lay Me Down to Sleep."