| Year | 1940 |
| Date | 21-Mar |
| Volume | 82 |
| Issue | 2,028 |
| Page | 294 |
| Category | Model Aeronautics |
| Part | |
| Title | The "Elf", Low-Wing Cabin Monoplane |
| Author | Lawrence H.Sparey |
| Notes | Theory and practice of model aeroplane building. Suitability of purpose, 1 1/2 h.p. rubber motor, framework |