Brandt eventually tired of dealing with the Cohn brothers, and sold his one-third stake to Harry Cohn, who took over as president. In an effort to improve its image, the Cohn brothers renamed the company Columbia Pictures Corporation on January 10, 1924.[8] Cohn remained head of production as well, thus concentrating enormous power in his hands. He would run Columbia for the next 34 years, the second-longest tenure of any studio chief, behind only Warner Bros.' Jack L. Warner. In an industry rife with nepotism, Columbia's was particularly notorious. Humorist Robert Benchley called it the Pine Tree Studio, "because it has so many Cohns".