| Year | 2011 |
| Date | 14-Jan |
| Volume | 206 |
| Issue | 4,395 |
| Page | 96 |
| Category | Locomotive |
| Part | |
| Title | The locomotive that came in from the cold - tender first (Su251-53) |
| Author | Chris Marshall |
| Notes | Tells the story. Introduction, gauge and scale, Su class details, class variations, design work, tender first |