Columbia subject headings:
Reconstruction.
Slavery--United States--History.
United States--History--1849-1877.
Harvard subject headings:
Reconstruction.
Slavery--United States--History
United States--History--1849-1877.
Princeton subject headings:
Reconstruction (U.S. history, 1865-1877)
Slavery--United States--History.
United States--History--1849-1877.