Columbia subject headings:
Lincoln, Abraham, 1809-1865--Bibliography.
Lincoln, Mary Todd, 1818-1882--Bibliography.
Presidents' spouses--United States--Bibliography.
Harvard subject headings:
Lincoln, Abraham, 1809-1865--Bibliography.
Lincoln, Mary Todd, 1818-1882--Bibliography.
Presidents' spouses--United States--Bibliography.
Princeton subject headings:
Lincoln, Abraham, 1809-1865--Bibliography.
Lincoln, Mary Todd, 1818-1882--Bibliography.
Presidents' spouses--United States--Bibliography.