Columbia subject headings:
Depressions--1929.
United States--Economic conditions--1918-1945.
United States--History--1919-1933.
Harvard subject headings:
Depressions--1929--United States
Poor teenagers--United States.
Tramps--United States
Princeton subject headings:
Depressions--1929.
United States--Economic conditions--1918-1945.
United States--History--1929-1933.