How to Bridge a Gorge (1942)
An instructional video that teaches, through stop-motion animation, how to build a bridge over a gorge that can hold heavy military equipment. Preserved by the Academy Film Archive in 2004.
Director: Ray Harryhausen
| Directing | Ray Harryhausen | Director |
| Visual Effects | Ray Harryhausen | Animation |
| Crew | Ray Harryhausen | Cinematography |