| Year | 2023 |
| Date | 20-Oct |
| Volume | 231 |
| Issue | 4,728 |
| Page | 565 |
| Category | Steam |
| Part | 11 |
| Title | Radial Valve Gears Again |
| Author | Duncan Webster |
| Notes | Morton's Valve Gear. Sheds light on what is often seen as a complex subject. Version 2, JMG gear, finale, references |