Buster Keaton Rides Again

Buster Keaton Rides Again is a 55-minute 1965 documentary film directed by John Spotton and narrated by Michael Kane. The film is a behind-the-scenes documentary shot while Buster Keaton's film The Railrodder (1965), was being produced. Although it is a production documentary, the film is actually longer than The Railrodder, which was only 24 minutes long. Both films were produced by the National Film Board of Canada (NFB). A French version of Buster Keaton Rides Again, Avec Buster Keaton was also released.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.