| Year | 1969 |
| Date | 15-Aug |
| Volume | 135 |
| Issue | 3,375 |
| Page | 802 |
| Category | Stationary Engine |
| Part | |
| Title | Overtype Semi-Portable Engines |
| Author | W.J.Hughes |
| Notes | Garrett single cylinder overtype, compound engines, jet condensers, Rider's automatic expansion gear, other features, stationary engines |