| Year | 1990 |
| Date | 20-Jul |
| Volume | 165 |
| Issue | 3,877 |
| Page | 100 |
| Category | Railway |
| Part | 4 |
| Title | Vacuum Brakes. An Automatic Vacuum Braking System as used by Birmingham S.M.E. |
| Author | Brian Hughes |
| Notes | Described. Reservoir vacuum release valve, vacuum pipework, braking calculations, vacuum gauges and driving trucks |