| Year | 1958 |
| Date | 23-Jan |
| Volume | 118 |
| Issue | 2,957 |
| Page | 112 |
| Category | Locomotive |
| Part | |
| Title | Cross-Drive Valve Gears |
| Author | LBSC |
| Notes | Clarifies some often-discussed problems. The Young valve-gear, Deeley's cross-drive, Great Western "scissors", simple Joy gears |