Excerpt from the Proceedings of The Institution of Civil Engineers, 1873 - 1874
| pp 1 - 22 | Early Signals, Semaphore Signals, Shunting Signals, Distans Signals, Indicators for Switches, Self-acting Signals, Audible Signals |
| pp 23 - 45 | Interlocking, Level Crossings, Switch Locks, Getting Slow Traffic out of the way |
| pp 46 - 52 | Separate Goods Yards, Conclusion, Costs |
| pp 53 - 110 | Abstract on the Discussion upon Rapier's Paper |
| Plate 27 | Fixed Signals I |
| Plate 28 | Fixed Signals II |
| Plate 29 | Interlocking I |
| Plate 30 | Interlocking II |
| Plate 31 | Track Layouts |
| Plate 32 | Working Timetable of the Great Northern Railway |
Sidan uppdaterad den 21 september 2009