Dan Seymour appeared in a 1948 film by what director?
Dan Seymour:  He appeared in several Humphrey Bogart films, including "Casablanca", "Key Largo", and "To Have and Have Not". Key Largo (film): Key Largo is a 1948 film noir directed by John Huston and starring Humphrey Bogart, Edward G. Robinson and Lauren Bacall.
John Huston