| Year | 2014 |
| Date | 22-Aug |
| Volume | 213 |
| Issue | 4,489 |
| Page | 304 |
| Category | Historic |
| Part | |
| Title | 200 years of Puffing Billy |
| Author | Roger Backhouse |
| Notes | The adhesion problem, the gear train of Puffing Billy, Hedley and Hackworth's model test carriage, Wylam locomotives, return flue improves steaming, operation, preservation and replicas, influences, thanks, Puffing Billy's motion |