| Year | 1946 |
| Date | 10-Oct |
| Volume | 95 |
| Issue | 2,370 |
| Page | 353 |
| Category | Internal Combustion |
| Part | |
| Title | Double-Acting Petrol Engines |
| Author | George Goodman |
| Notes | A 3-cylinder 4-stroke double-acting engine, sectional and general arrangement of a double-acting two-stroke engine |