| Year | 1931 |
| Date | 16-Apr |
| Volume | 64 |
| Issue | 1,562 |
| Page | 377 |
| Category | Model Marine Notes |
| Part | |
| Title | A Self-steering Model Power Boat |
| Author | |
| Notes | Describing an interesting invention whereby an automatic variable steering gear enables a model power boat to run over any course prescribed in advance by the owner. "Pathfinder", chart of course, steering disc |