Columbia subject headings:
African Americans--History.
African Americans--Homes and haunts--Guidebooks.
Historic sites--United States--Guidebooks.
United States--Guidebooks.
Harvard subject headings:
African Americans--History--Guidebooks.
African Americans--Homes and haunts--Guidebooks.
Historic sites--United States--Guidebooks
Princeton subject headings:
Guidebooks.
United States--Guidebooks.