| Year | 1958 |
| Date | 04-Dec |
| Volume | 119 |
| Issue | 3,002 |
| Page | 708 |
| Category | Talking about steam |
| Part | |
| Title | Pioneer's part in traction engine development |
| Author | W.J.Hughes |
| Notes | Bray's traction engine of 1858, design by D.K.Clarke, 1862 Great Exhibition, Bray engine by Dubs and Company |