Israel Baker, Robert Barene, Sam Freed, Jacques Gasselin, Ben Gill, Mort Herbert, Dan Lube, William Miller, Lou Raderman, Ambrose Russe, Albert Saparoff, Eudice Shapiro, David Frisina (#2, 11–12), Anatol Kaminsky (#2, 3–4, 6, 8–12) Paul Lowenkron (#2, 3–4, 6, 8–12), Victor Arno (#3–4, 6, 8–10) – violin
Norman Botnick (#2, 3–4, 6, 8–12), G. R. Menhennick (#3–4, 6, 8–10), Virginia Majewski, Robert Ostrowsky, Joseph Reilich, Milton Thomas – viola