View of the control building, "nerve center" of the General Electric Company's new Switchgear Development Laboratory in Philadelphia PA. The modern, brick and steel, air-conditioned structure houses the maze of intricate control and recording apparatus used in testing circuit breakers and other switchgear equipment, as well as administrative office and record files. Its shatterproof, panoramic windows front on the five test cells and high voltage outdoor test yard to permit operators at the main control board to watch equipment undergoing test in those areas.

General Electric Company1952-03-31