Rhif Archif
6514797
Disgrifiad
Cross-section and long-section drawing of Great Porthamel produced by Stanley Jones, undated.
Cofnod Casglu
SRJC - Stanley R. Jones Collection
Cyfrwng
Graphic.
Cychwynnwr
Stanley R. Jones
Dyddiad
c. 1961
Arolwg / Survey