Columbia subject headings:
Cities and towns--United States.
Electric power distribution.
Industries--United States--History.
United States--Economic conditions--1918-1945.
Harvard subject headings:
Cities and towns--United States.
Electric power distribution
Industries--United States--History
United States--Economic conditions--1918-1945.
Princeton subject headings:
Cities and towns--United States.
Electric power distribution.
Industries--United States--History.
United States--Economic conditions--1918-1945.