Columbia subject headings:
Harvard subject headings:
Depressions--1929--United States--Sources.
United States--Social conditions--1933-1945--Sources.
United States--Social life and customs--1918-1945--Sources.
Princeton subject headings:
Depressions--1929--United States--Sources.
United States--Social conditions--1933-1945--Sources.
United States--Social life and customs--1918-1945--Sources.