He was partner in the "Leland Hayward-Nat Deverich Talent Agency". Among their 300 clients were Jimmy Stewart, Greta Garbo, Kathryn Hepburn, Myrna Loy, Ginger Rogers, Fred Astaire, Boris Karloff, Gene Kelly, Gregory Peck, Montgomery Clift, Henry Fonda, Ernest Hemingway, Judy Garland, and many others. Their independent agency was bought out by MCA in 1945.