At sixteen, in 1928, he began attending the Art Students League of New York and became an active participant in League activities, serving as a monitor and contributing to the quarterly magazine. At a membership meeting in early 1932, Holtzman’s remarks against the xenophobia of the League’s director were instrumental in carrying a membership vote that brought George Grosz and Hans Hofmann to teach at the League. At the close of this meeting, Burgoyne Diller, a Hofmann protégé, taken by Holtzman’s independence of mind, introduced himself, beginning an important lasting relationship. (1)(5)(8)(9)