Columbia subject headings:
African Americans--History--To 1863.
Slaves--United States--Biography.
Slaves--United States--Social conditions.
Harvard subject headings:
African Americans--History--To 1863
Slaves--United States--Biography
Slaves--United States--Social conditions
Princeton subject headings:
African Americans--History--To 1863.
Slaves--United States--Biography.
Slaves--United States--Social conditions.