| Year | 1923 |
| Date | 08-Nov |
| Volume | 49 |
| Issue | 1,176 |
| Page | 517 |
| Category | Railway |
| Part | 12 |
| Title | Some Notes on the Development of Railway Signalling |
| Author | E.H.Ellingham |
| Notes | Audible Cab Signals. Showing locomotive shoe and ramp on track, apparatus in cab, cover removed to show construction, express locomotive fitted (No. 4006 Red Star) |