| Year | 1990 |
| Date | 01-Jun |
| Volume | 164 |
| Issue | 3,874 |
| Page | 674 |
| Category | Steam |
| Part | 3 |
| Title | Pickering Governors |
| Author | Tubal Cain |
| Notes | The Pickering Governor for reciprocating steam engines, revealed in detail. Governing two-cylinder engines, parts list, model Pickering governors |