Columbia subject headings:
Depressions--1857--United States.
United States--Economic conditions--To 1865.
United States--Politics and government--1857-1861.
Harvard subject headings:
Depressions--1857--United States.
Depressions--1857.
United States--Economic conditions--To 1865.
United States--Politics and government--1857-1861.
Princeton subject headings:
Depressions--1857--United States.
United States--Economic conditions--To 1865.
United States--Politics and government--1857-1861.