Columbia subject headings:
Earthworks (Archaeology)--Wales.
Fox, Cyril, Sir, 1882-1967--Notebooks, sketchbooks, etc.
Wales--Antiquities.
Harvard subject headings:
Earthworks (Archaeology)--Wales.
Fox, Cyril, Sir, 1882-1967--Notebooks, sketchbooks, etc.
Wales--Antiquities.
Princeton subject headings:
Earthworks (Archaeology)--Wales.
Earthworks (Archaeology)--Welsh Borders (England and Wales).
Fox, Cyril, Sir, 1882-1967--Notebooks, sketchbooks, etc.
Offa's Dyke (Wales and England)
Wales--Antiquities.
Welsh Borders (England and Wales)--Antiquities.