E.H. · E Hartley · K. H. · K. Hartley
Narrow Gauge Railway Society · The Oakwood Press
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Easingwold Railway | 978-0-85361-413-5 (0-85361-413-X) | 1991 |
| Sand Hutton Light Railway | 978-0-9507169-1-6 (0-9507169-1-X) | 1982 |