Rhif Archif
6198204
Disgrifiad
Dorothea Slate Quarry; photo survey comprising 143 black and white photographs accompanied by a detailed key, produced by Iain Wright, 1987.
Enw Casgliad
NMR Site Files
Cyfrwng
Photo, Cartographic.
Cychwynnwr
Iain N. Wright, RCAHMW
Dyddiad
1987-11-05