| Year | 1935 |
| Date | 04-Apr |
| Volume | 72 |
| Issue | 1,769 |
| Page | 329 |
| Category | Model Marine Notes |
| Part | |
| Title | A 30 c.c. Speed boat Engine with Enclosed Valve Gear |
| Author | B.Kerswell |
| Notes | Cylinder head, rocker box, cam box, view of complete engine showing oil sump and enclosed rockers and push rods, cylinder, crankshaft assembly, dismantled to show internal construction |