| Year | 1967 |
| Date | 20-Jan |
| Volume | 133 |
| Issue | 3,313 |
| Page | 59 |
| Category | Internal Combustion |
| Part | 6 |
| Title | Four-Stroke Petrol-Engines |
| Author | Edgar T.Westbury |
| Notes | A review of progress in pre- and post-war years. Seal engineOffset cylinders, Sealion by J.C.Davis, producing camshafts, high bearing loads, Sealion engine castings machined by F.Bettles |