Columbia subject headings:
Excavations (Archaeology)--North America.
Informational works.
North America--Antiquities.
North America--Discovery and exploration--Norse.
Viking antiquities--North America.
Vikings--North America.
Harvard subject headings:
Explorers--North Atlantic Region--History.
Explorers--Scandinavia--History.
Iceland--Discovery and exploration--History.
Informational works
North America--Discovery and exploration--History.
North America--History
Vikings--North America.
Princeton subject headings:
Explorers--North Atlantic Region--History.
Explorers--Scandinavia--History.
Iceland--Discovery and exploration--History.
Informational works.
North America--Discovery and exploration--History.
North America--History.
Vikings--North America.