Columbia subject headings:
United States--Economic conditions--1918-1945.
United States--Politics and government--1933-1945.
Harvard subject headings:
United States--Economic conditions--1918-1945.
United States--Politics and government--1933-1945.
United States--Politics and government--1933-1953.
Princeton subject headings:
United States--Economic conditions--1918-1945.
United States--Politics and government--1933-.