| Year | 1939 |
| Date | 14-Dec |
| Volume | 81 |
| Issue | 2,014 |
| Page | 657 |
| Category | Valve gear |
| Part | |
| Title | Building up Walschaerts Expansion Links |
| Author | H.G. and A.P.C. |
| Notes | The finished link (in two forms), the trunnion pin, the trunnion holes, riveting-in the trunnion, skimming-up the trunnion to size |