| Year | 1939 |
| Date | 02-Nov |
| Volume | 81 |
| Issue | 2,008 |
| Page | 496 |
| Category | Model Aeronautics |
| Part | |
| Title | Theory and Practice of Model Aeroplane Building |
| Author | Lawrence H.Sparey |
| Notes | The theory and practice of model aeroplane building. Duration monoplane, tail construction of balsa and birch, scale model monoplane driven by a 3 c.c. engine |