Howell Harris diaries (microfilm copies),
- Microfilms of Howell Harris Diaries (positive and negative copies)
- File
- 2001.
Copïau microffilm o ddyddiaduron Howell Harris (1714-1773) i'w defnyddio gan ddarllenwyr yn lle'r gwreiddiol. = Microfilm copies of the diaries of Howell Harris (1714-1773) to be consulted by readers in place of the originals