| Year | 1996 |
| Date | 07-Jun |
| Volume | 176 |
| Issue | 4,018 |
| Page | 637 |
| Category | Locomotive |
| Part | |
| Title | A Southern Railway 0-8-0T Z Class |
| Author | Jim Ewins |
| Notes | Describes the novel valve gear and discusses the action of other types of gears. Perfect valve events, the locomotive |