Columbia subject headings:
Cape Breton Island (N.S.)--Maps.
Geographical positions--Nova Scotia--Cape Breton Island.
Geographical positions--Nova Scotia.
Longitude.
Maps.
Newfoundland and Labrador--Maps.
Nova Scotia--Maps.
Harvard subject headings:
Cape Breton Island (N.S.)--Maps.
Geographical positions--Cape Breton.
Geographical positions--Nova Scotia.
Longitude
Newfoundland and Labrador--Maps.
Nova Scotia--Maps.
Princeton subject headings: