Columbia subject headings:
Harvard subject headings:
Lincolnshire (England)--Antiquities, Roman.
Lincolnshire (England)--Antiquities.
Lincolnshire (England)--History.
Princeton subject headings:
Great Britain--History--Roman period, 55 B.C.-449 A.D.
Lincolnshire (England)--Antiquities, Roman.
Lincolnshire (England)--History.