| Year | 1952 |
| Date | 13-Mar |
| Volume | 106 |
| Issue | 2,651 |
| Page | 345 |
| Category | Locomotive |
| Part | |
| Title | "Britannia" in 3 1/2-in. Gauge |
| Author | LBSC |
| Notes | Details of the Valve-Gear. Elevation and plan, a shock for "scale" merchants, brief specification, clearance, valve fork or crosshead, lap-and-lead movement, union link, combination lever |