From Wikipedia.

Lesley Selander (May 26, 1900 – December 5, 1979) was an American film director of Westerns and science fiction movies. His career as director, spanning 127 feature films and dozens of TV episodes, lasted from 1936 to 1968. Before that, Selander was assistant director on films such as The Cat and the Fiddle (1934), A Night at the Opera (1935), and Fritz Lang's Fury (1936).