Cwmorthin slate quarry
By: by Graham Isherwood.
Published: 1982
Place of publication: Dolgellau
Language: eng
Number of pages: 90
Subjects: Slate industry -- Wales -- Blaenau Ffestiniog (Gwynedd) -- History.; Cwmorthin Slate Quarry (Wales) -- History.; Blaenau Ffestiniog (Gwynedd) -- Industries -- History.
Notes: Folded maps attached to inside covers.