| Year | 1989 |
| Date | 02-Jun |
| Volume | 162 |
| Issue | 3,850 |
| Page | 712 |
| Category | Countryman's Steam |
| Part | 11 |
| Title | Superba. Fowler Class Z7 and Superba Ploughing Engine in 2 in. scale |
| Author | John Haining |
| Notes | The model winding drum, ploughing clutch and shafts, gears and clutch teeth, the clutch controls |