| Year | 1990 |
| Date | 06-Apr |
| Volume | 164 |
| Issue | 3,870 |
| Page | 418 |
| Category | Countryman's Steam |
| Part | 20 |
| Title | Superba. Fowler Class Z7 and Superba Ploughing Engine in 2 in. scale |
| Author | John Haining |
| Notes | The piping diagram, pressure gauging, boiler cladding and lagging, manhole with cladding |