Harry Warner was an American film executive and one of the founding brothers of Warner Bros. Studios, contributing significantly to the evolution of the film industry.
Sam Warner was an American film producer and co-founder of Warner Bros., who revolutionized the film industry with the introduction of synchronized sound in movies.
Louis B. Mayer was a pioneering film studio executive and co-founder of Metro-Goldwyn-Mayer (MGM), shaping the golden age of Hollywood.