| Year | 1939 |
| Date | 27-Jul |
| Volume | 81 |
| Issue | 1,994 |
| Page | 98 |
| Category | Railway |
| Part | |
| Title | Electric Traction |
| Author | C.Baker |
| Notes | A Model electric Traction Control and Signalling Equipment. Trip switch, signal, locomotive, locomotive reverser, track, scope of the design |