| Year | 1940 |
| Date | 01-Feb |
| Volume | 82 |
| Issue | 2,021 |
| Page | 119 |
| Category | Locomotive |
| Part | |
| Title | The Beginner's Guide to Lap and Lead |
| Author | LBSC |
| Notes | How lap and lead first came about, a North-countryman's first attempt at an L.M.S. "4F", what actually happens, why valves operate with lever in middle, comments and facts, the "kick-back fallacy explained |