| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Slate quarries of North Wales in 1873: A series of letters by a special correspondent of The Carnarvon and Denbigh herald | 978-O-9512373-2-8 (O-9512373-2-2) | 1987 |
J. T. · L. J. · L.M. · Lewis J. · Lewis M · M J · M. J. T. Lewis · M. T.