Columbia subject headings:
Social classes--United States--History.
White collar workers--Germany--History.
White collar workers--United States--History.
Harvard subject headings:
Social classes--United States--History
White collar workers--Germany--History.
White collar workers--United States--History.
Princeton subject headings:
Fascism.
United States--Economic conditions--1865-1918.
United States--Economic conditions--1918-1945.
White collar workers--Labor unions--United States--History.
White collar workers--United States--History.