| Year | 1979 |
| Date | 03-Aug |
| Volume | 145 |
| Issue | 3,614 |
| Page | 902 |
| Category | Locomotive |
| Part | 10 |
| Title | 'Columbia'. A Baldwin U.S.A. based design for 3 1/2 in. gauge |
| Author | Martin Evans |
| Notes | More valve gear parts, smokebox details, arrangement of steam and exhaust pipes |