Trial.
Publications (4)
- Eade, Sara (2010); Ratgoed A Study In Slate. pp.25-26. Sara Eade. ISBN: 9780956565204
- Richards, Alun J. (2004); Slate Quarrying at Corris; pp.77; Gwasg Carreg Gwalch; ISBN 1-84524-068-5
- Richards, Alun John (1991); Gazeteer of the Welsh Slate Industry, A; Gwasg Carreg Gwalch 978-0863811968
- Richards, Alun John, (1999); The Slate Regions of North and Mid Wales and their Railways; Gwasg Carreg Gwalch; 0863815773
