Columbia subject headings:
Lincoln, Abraham, 1809-1865--Political career before 1861.
Presidents--United States--Election--1860.
United States--Politics and government--1857-1861.
Harvard subject headings:
Lincoln, Abraham, 1809-1865--Political career before 1861.
Presidents--United States--Election--1860
United States--Politics and government--1857-1861.
Princeton subject headings:
Lincoln, Abraham, 1809-1865--Political career before 1861.
Presidents--United States--Election--1860.
United States--Politics and government--1857-1861.