Columbia subject headings:
Lincoln, Abraham, 1809-1865.
United States--Politics and government--1861-1865.
United States. President (1861-1865 : Lincoln). Emancipation Proclamation.
Harvard subject headings:
Lincoln, Abraham, 1809-1865
Slaves--Emancipation--United States
United States--Politics and government--1861-1865.
United States. President (1861-1865 : Lincoln). Emancipation Proclamation
Princeton subject headings:
Lincoln, Abraham, 1809-1865.
Slaves--Emancipation--United States.
United States--Politics and government--1861-1865.
United States. President (1861-1865 : Lincoln). Emancipation Proclamation