| Year | 1934 |
| Date | 26-Apr |
| Volume | 70 |
| Issue | 1,720 |
| Page | 391 |
| Category | Portable Engine |
| Part | |
| Title | Portable Engine Models |
| Author | Henry Greenly |
| Notes | Large portable by Marshall's of Gainsborough, longitudinal thrust stays fitted to larger models, crankshaft bearing supports, twin H.P. cylinders, side regulator, smokebox support |