Columbia subject headings:
Harvard subject headings:
Africa, North--Description and travel.
Morocco--Description and travel--19th century.
Morocco--History--1516-1830.
Plague--Morocco.
Sūsah (Tunisia)--Description and travel.
Tombouctou (Mali)--Description and travel.
Princeton subject headings:
Africa, North--Description and travel.
Morocco--Description and travel.
Morocco--History--1516-1830--Sources.
Sūsah (Tunisia)--Description and travel.
Tombouctou (Mali)--Description and travel.