A History of engineering and science in the Bell System / prepared by members of the technical staff, Bell Telephone Laboratories ; M.D. Fagen, editor.
American Telephone and Telegraph Company -- History.
Telephone -- United States -- History.
Telecommunication -- United States -- History.
Electronics -- United States -- History.
Institutional History
Fagen, M. D.
Joel, Amos E.
Schindler, G. E.
Bell Telephone Laboratories