| Year | 1991 |
| Date | 05-Apr |
| Volume | 166 |
| Issue | 3,894 |
| Page | 389 |
| Category | Road Locomotive |
| Part | |
| Title | Working a Clayton |
| Author | Ron Cockerill |
| Notes | Some modifications to the Clayton Undertype Steam Wagon. Feedwater modifications, steering gear modifications, the latest alteration |