Irving Brecher was an American screenwriter, producer, and director celebrated for his work in comedy. He began his career writing jokes for radio personalities before transitioning to film. Brecher was the only writer to receive sole credit on Marx Brothers films, penning At the Circus (1939) and Go West (1940). He also contributed to the screenplay of The Wizard of Oz (1939). Brecher created the radio and television sitcom The Life of Riley, which aired from 1944 to 1951, and directed the film Meet Me in St. Louis (1944). His sharp wit and comedic timing earned him a reputation as one of America's leading humorists.