Columbia subject headings:
Hebrides (Scotland)--History.
Northmen--Scotland--Hebrides--History.
Northmen--Scotland--Orkney--History.
Northmen--Scotland--Shetland--History.
Orkney (Scotland)--History.
Scotland--Civilization--Scandinavian influences.
Scotland--History--To 1603.
Shetland (Scotland)--History.
Vikings.
Harvard subject headings:
Hebrides (Scotland)--History.
Northmen--Scotland--Hebrides--History.
Northmen--Scotland--Orkney--History.
Northmen--Scotland--Shetland--History.
Orkney (Scotland)--History.
Scotland--Civilization--Scandinavian influences.
Scotland--History--To 1603.
Shetland (Scotland)--History.
Vikings.
Princeton subject headings:
Hebrides (Scotland) in literature.
Old Norse literature--History and criticism.
Orkney (Scotland) in literature.
Sagas.
Scalds and scaldic poetry.
Shetland (Scotland) in literature.
Vikings.