Columbia subject headings:
Harvard subject headings:
Great Britain--Description and travel--Early works to 1800.
Missionaries--Homes and haunts--Great Britain.
Princeton subject headings:
Celts--Great Britain--History.
Celts--Religion.
England, Northern--Antiquities, Celtic--Guidebooks.
Great Britain--Antiquities, Celtic--Guidebooks.
Great Britain--Church history--449-1066.
Scotland--Antiquities, Celtic--Guidebooks.