found: Henry Aldrich, editor [MP] 1942: credits (cast of characters, Leon Belasco)
found: Halliwell's filmgoer's comp., 1988 (Belasco, Leon; b. 1902; Russian-born actor)
found: IMDb, Oct. 9, 2008 (Leon Belasco; b. Oct. 11, 1902, Odessa, Ukraine; d. June 1, 1988, Orange, Calif.)
found: Answers,com, Oct. 9, 2008 (Leon Belasco; b. Oct. 11, 1902, Odessa, Ukraine; d. 1988; prepared for a musical career at various seats of learning in Japan and Manchuria; for several years, was first violinist for the Tokyo Symphony, and later led his own orchestra)
found: Coslow, S. Turn off the moon [SR] 1937: labels (Leon Belasco and his orchestra)