| Year | 1934 |
| Date | 16-Aug |
| Volume | 71 |
| Issue | 1,736 |
| Page | 158 |
| Category | Locomotive |
| Part | |
| Title | Loco. Prototypes. News and Notes |
| Author | Chas. S.Lake |
| Notes | New "Sentinel" Locomotives (twelve-cylinder for South America, sectional elevation and plan of compound engine). Steam Locomotive Design |