- NLW ex 1168.
- File
- 1897.
Notebook of Robert Owen, Bron Seiont, Pont Rug, containing his notes on Richard Humphreys Morgan, Phonographia sef Llawfer yn trefn Mr Isaac Pitman wedi ei chyfaddasu i'r iaith Gymraeg [Wrexham 1878] and exercises in shorthand.