| Rhif Cyf Amg | PFA/15/231 |
| Teitl | Correspondence Relating to the Penrhyn Quarry and the Wages of the Quarrymen |
| Disgrifiad | This includes correspondence concerning royalty of carriage and commission of sale at the quarry, raise in wages and the prices paid to quarrymen. |
| Dyddiad | 09 August 1865- 17 August 1865 |
| Extent | 7 letters |