Columbia subject headings:
Electric industry workers--Labor unions--United States--History.
Electric industry workers--United States--History.
International Brotherhood of Electrical Workers--History.
Harvard subject headings:
Electric industry workers--Labor unions--United States--History.
Electric industry workers--United States--History.
International Brotherhood of Electrical Workers--History.
International Brotherhood of Electrical Workers.
Princeton subject headings:
Electric industry workers--Labor unions--United States--History.
Electric industry workers--United States--History.
International Brotherhood of Electrical Workers--History.