Thom Vernon · Tönne Vormann · Tom Vernon
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Archibald Sturrock: Pioneer Locomotive Engineer | 978-0-7524-4135-1 (0-7524-4135-3) | 2006 |
| The Yorkshire Engine Company: Sheffield's Locomotive Manufacturer | 978-0-7524-4530-4 (0-7524-4530-8) | 2008 |