| Year | 2007 |
| Date | 23-Nov |
| Volume | 199 |
| Issue | 4,313 |
| Page | 618 |
| Category | Locomotive |
| Part | |
| Title | The back to front Engines |
| Author | Peter Rich |
| Notes | Looks at the Great Western sandwich framed ("Dean") 3521 Class of 4-4-0 locomotives. To get your attention, an explanation, boiler codes, principle dimensions in rebuilt form |