Disgrifiad
Collection of material relating to the production of RCAHMW volume Welsh Slate, Archaeology and History of an Industry, published 2015.
Cofnod Casglu
WSP - Welsh Slate Publication Collection
Cyfrwng
Digital files. Text, Photo, Cartographic, Graphic.
Cychwynnwr
Dr David R.H. Gwyn, RCAHMW
