| Year | 1929 |
| Date | 27-Jun |
| Volume | 60 |
| Issue | 1,468 |
| Page | 609 |
| Category | Locomotive |
| Part | |
| Title | Loco. Prototypes. News and Notes |
| Author | Chas. S.Lake |
| Notes | Interesting British Locomotive Developments (L.M.S ultra high-pressure locomotive). The Mallet Locomotive for the Southern Pacific Railroad |