Columbia subject headings:
Medicine--Africa, West--History--19th century.
Medicine--Nigeria--History--19th century.
Physicians--Nigeria--Biography.
Harvard subject headings:
Medicine--Africa, West--History--19th century.
Medicine--Nigeria--History--19th century.
Physicians--Nigeria--Biography.
Princeton subject headings:
Medicine--Africa, West--History--19th century.
Medicine--Nigeria--History--19th century.
Physicians--Nigeria--Biography.