Do we know for a fact that Alfred L. Werker directed more films than Jon Jost?
Alfred L. Werker:  After a number of film production jobs and assistant directing, Werker co-directed his first film, "Ridin' the Wind" in 1925 alongside director Del Andrews. Alfred L. Werker:  He was brought in by Fox Film Corporation executives to re-shoot and re-edit Erich von Stroheim's film "Hello, Sister! Alfred L. Werker: " (1933), co-starring Boots Mallory and ZaSu Pitts.
i don't know