| Year | 1958 |
| Date | 09-Oct |
| Volume | 119 |
| Issue | 2,994 |
| Page | 464 |
| Category | Locomotive |
| Part | |
| Title | Walschaerts valve gear |
| Author | LBSC |
| Notes | Oscillating link, eccentric rod, variation in detail, with outside admission, valve gear inside frames, cardboard models, the problem |