| Year | 1998 |
| Date | 30-Jan |
| Volume | 180 |
| Issue | 4,060 |
| Page | 162 |
| Category | Countryman's Steam |
| Part | |
| Title | Superheaters |
| Author | John Haining |
| Notes | The application of superheating for road and agricultural engines, recalls the Great Kemna-Fowler Deep Ploughing Trials. Superba, Kemna ploughing engine, superheating: rail versus field |