found: His Dragonslayer [SR] p1981:label (Alex North)
found: Rehrig, W.H. The heritage ency. of band music, c1991(North, Alex; b. Dec. 4, 1910, Philadelphia, Pa.)
found: Nite, N.N. Rock on almanac, 2nd ed.:p. 519 (Alex North; d. Sep. 8, 1991)
found: Henderson, S.S. Alex North, film composer:ECIP data (Alex North; original name, Isadore Soifer)
found: IMDb, July 28, 2005(Alex North; b. Dec. 4, 1910, Chester, Pa.; d. Sept. 8, 1991, Los Angeles, Calif.; music department, composer)
found: Grove music online WWW site, Nov. 17, 2015:(Alex North; b. Chester, Pa., 4 Dec. 1910; d. Los Angeles, 8 Sept. 1991; American composer, conductor)