Columbia subject headings:
Audubon, John James, 1785-1851.
Birds--Canada.
Birds--United States.
Canada--Description and travel.
Ornithologists--United States--Biography.
United States--Description and travel.
Harvard subject headings:
Audubon, John James, 1785-1851.
Biographies
Birds--Canada.
Birds--United States.
Canada--Description and travel.
Ornithologists--United States--Biography
United States--Description and travel.
Princeton subject headings:
Audubon, John James, 1785-1851.
Birds--Canada.
Birds--United States.
Canada--Description and travel.
Ornithologists--United States--Biography.
United States--Description and travel.