| Year | 1955 |
| Date | 27-Jan |
| Volume | 112 |
| Issue | 2,801 |
| Page | 106 |
| Category | Portable Engine |
| Part | |
| Title | A Free-lance Portable Compound |
| Author | G.C.Salmon |
| Notes | Re-Constructed form a Stationary Boiler. "Helen", true wheels, slow progress, top and rear views, eccentrics, the toughest job, lubrication |