Columbia subject headings:
England--Boundaries--Wales--History.
Herefordshire (England)--History.
Shropshire (England)--History.
Wales--Boundaries--England--History.
Harvard subject headings:
Landscapes--Wales--Wales--Borders of Wales.
Welsh Borders (England and Wales)--Guidebooks.
Welsh Borders (England and Wales)--History.
Princeton subject headings:
Landscapes--Wales--Borders of Wales.
Welsh Borders (England and Wales)--Guidebooks.
Welsh Borders (England and Wales)--History.