Donald Crisp, Jean Harlow, Clark Gable, and Mary Astor
One of my favorite 1930s films (or films from any era!) is Red Dust (1935) and four of the reasons are pictured above: Donald Crisp, Jean Harlow, Clark Gable, and Mary Astor. Extraordinary movie, extraordinary cast, and extraordinary director (Victor Fleming).
You can find the extraordinary Red Dust on dvd (Amazon link) or watch the movie on Prime Video!