| Year | 1952 |
| Date | 04-Sep |
| Volume | 107 |
| Issue | 2,676 |
| Page | 323 |
| Category | Electronic |
| Part | |
| Title | The Mechanics of Radio Control |
| Author | Raymond F.Stock |
| Notes | Self-contained selector and steering unit, control power, escapement friction-drive from propeller shaft, multi-plate clutch |