Columbia subject headings:
African Americans--History--To 1863.
Attitude (Psychology)
Black people--History--To 1863.
Slavery--United States--History.
Social psychology--United States.
United States--Race relations.
Harvard subject headings:
African Americans--History--To 1863
African Americans--Public opinion.
Attitude (Psychology)
Slavery--United States--History
United States--Race relations
White people--United States--Attitudes
Princeton subject headings:
African Americans--History--To 1863.
Slavery--United States--History.
United States--Race relations.