| Year | 1940 |
| Date | 21-Nov |
| Volume | 83 |
| Issue | 2,063 |
| Page | 395 |
| Category | Locomotive |
| Part | |
| Title | Valve Gear for the "Owl" |
| Author | LBSC |
| Notes | How the gear operates, Hackworth valve-gear, slide blocks, eccentric straps and rods, radius rod, how to assemble and connect up, a friendly comment |