Columbia subject headings:
Harvard subject headings:
Africa, North--Description and travel.
Commerce (Brig)
Riley, James, 1777-1840--Portraits.
Riley, James, 1777-1840.
Sahara--Description and travel.
Slavery--Africa, North
Princeton subject headings:
Africa, North--Description and travel.
Commerce (Brig)
Sahara--Description and travel.
Slavery--Africa, North.