Columbia subject headings:
Harvard subject headings:
African Americans--History--1863-1877--Sources.
Freed persons--United States--History--Sources.
United States. Bureau of Refugees, Freedmen, and Abandoned Lands--History--Sources.
Princeton subject headings:
African Americans--History--Sources.
Freed persons--History--Sources.
Reconstruction (U.S. history, 1865-1877)--Sources.
United States. Bureau of Refugees, Freedmen, and Abandoned Lands--Archives.