Columbia subject headings:
Harvard subject headings:
Dakota Indians
Indian reservations--North Dakota
Madog ab Owain Gwynedd, 1150-1180?
Mandan Indians--Rites and ceremonies
North Dakota--Description and travel.
Princeton subject headings:
America--Discovery and exploration--Welsh.
Indian reservations--North Dakota.
Madog ab Owain Gwynedd, 1150-1180?
Mandan Indians--Origins.
Welsh Indians.