| Year | 1990 |
| Date | 21-Sep |
| Volume | 165 |
| Issue | 3,881 |
| Page | 366 |
| Category | Railway |
| Part | 6 |
| Title | Vacuum Brakes. An Automatic Vacuum Braking System as used by Birmingham S.M.E. |
| Author | Brian Hughes |
| Notes | Described. The brake valve, valve ejector connection, LMS brake valve on Ivatt class 2 2-6-0, GWR type model brake valve, GWR Collett 0-6-0 |