Did both Howard M. Mitchell and Coleman Francis direct silent films?
Howard M. Mitchell:  He appeared in 270 films between 1910 and 1952 and directed 38 silent films between 1915 and 1927. Coleman Francis: Coleman C. Francis (January 24, 1919 – January 15, 1973) was an American actor, writer, producer, and director. Coleman Francis:  He was best known for his film trilogy consisting of "The Beast of Yucca Flats" (1961), "The Skydivers" (1963), "Red Zone Cuba" (1966), all three of which were filmed in the general Santa Clarita, California area and used preoccupation with light aircraft and parachuting, coffee or cigarettes serving as a prop or a center of conversation, and a vigilante-style gunning down of suspects without a trial to conclude the film as frequent motifs.
i don't know