Question: When the View-Master was the official film of Disneyland in the 1970s, an actor whose career spanned how many decades was its spokesman?
Sentence (from "GAF Materials Corporation"): At one time GAF was also active in manufacturing photographic film as well as cameras and projectors (both still and motion picture), and was the manufacturer of the View-Master, the famous line of 3D transparencies, viewers and projectors.
Relevant evidence: No