| Year | 2009 |
| Month | November |
| Volume | 31 |
| Issue | 5 |
| Page | 155 |
| Author | Bowditch |
| Subject | Locomotive |
| Key Word | Last in a Series of Articles on different Valve Gears for Sweet Pea Strong Southern Helmholtz JMG Woolf Wren Hackworth Walschaerts |
| Article Title | Sweet Pea with Strong Valve Gear - A Postscript |