Question: Do we know for a fact that Alfred L. Werker directed more films than Jon Jost?

Related documents: [0]  [DOC] Alfred L. Werker (December 2, 1896 – July 28, 1975) was a film director whose work in movies spanned from 1917 through 1957. 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. He was brought in by Fox Film Corporation executives to re-shoot and re-edit Erich von Stroheim's film "Hello, Sister!" (1933), co-starring Boots Mallory and ZaSu Pitts. [END] 
[1]  [DOC] Jon Jost (born 16 May 1943 in Chicago) is an American independent filmmaker. [END]  
Answer: no
no