c't ยท Colin Thibert
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Admiralty Mediterranean Steam Packets | 978-9963-579-86-0 (9963-579-86-8) | 2002 |
| Robertson Revisited: A Study of the Maritime Postal Markings of the British Isles Based on the Work of Alan W.Robertson | 978-9963-579-77-8 (9963-579-77-9) | 1997 |