Columbia subject headings:
Harvard subject headings:
General Electric Company--History--20th century.
Pittsfield (Mass.)--Economic conditions.
Pittsfield (Mass.)--Social conditions.
Working class--Massachusetts--Pittsfield--History--20th century.
Princeton subject headings:
General Electric Company--History--20th century.
Pittsfield (Mass.)--Economic conditions.
Pittsfield (Mass.)--Social conditions.
Working class--Massachusetts--Pittsfield--History--20th century.