Disgrifiad
Drawings, maps, mss texts, and notes relating to Flat Holm Batteries and Fort.
Cofnod Casglu
GSC - Guns Across the Severn Collection
Cyfrwng
9 files. Cartographic, Text, Graphic.
Cychwynnwr
Dylan J. Roberts, Andrew Saunders, Mr C. Jack Spurgeon, Howard J. Thomas
