Columbia subject headings:
Lee, Robert E. (Robert Edward), 1807-1870.
Lincoln, Abraham, 1809-1865.
United States--History--Civil War, 1861-1865.
Harvard subject headings:
Lee, Robert E. (Robert Edward), 1807-1870
Lincoln, Abraham, 1809-1865
United States--History--Civil War, 1861-1865
Princeton subject headings:
Lee, Robert E. (Robert Edward), 1807-1870.
Lincoln, Abraham, 1809-1865.
United States--History--Civil War, 1861-1865.