Columbia subject headings:
Canada--Description and travel--Early works to 1800.
Canada--Description and travel.
Geology--North America.
Lyell, Charles, Sir, 1797-1875.
United States--Description and travel--Early works to 1800.
United States--Description and travel.
Harvard subject headings:
Atlantic States--Description and travel.
Canada--Description and travel.
Geology--North America
Lyell, Charles, Sir, 1797-1875--Travel--North America.
United States--Description and travel.
Princeton subject headings:
Canada--Description and travel--Early works to 1800.
Canada--Description and travel.
Geology--North America.
Lyell, Charles, Sir, 1797-1875.
United States--Description and travel.