Columbia subject headings:
Curtis, Benjamin Robbins, 1809-1874. Executive power.
United States. President (1861-1865 : Lincoln). Emancipation Proclamation.
Harvard subject headings:
Curtis, Benjamin Robbins, 1809-1874. Executive power.
Lincoln, Abraham, 1809-1865. Emancipation proclamation.
United States. President (1861-1865 : Lincoln). Emancipation Proclamation
Princeton subject headings: