| Year | 1999 |
| Date | 21-May |
| Volume | 182 |
| Issue | 4,094 |
| Page | 611 |
| Category | Stationary Engine |
| Part | 1 |
| Title | Harlequin & Hybriquin |
| Author | Mike Thurgood (South Africa) |
| Notes | Model engineering reminiscences, two vertical steam engines. First of the Quins, Harlequin, Hybriquin, intellectual exercises - for fun, references |