A history of engineering and science in the Bell system : transmission technology (1925-1975) / prepared by members of the technical staff, AT & T Bell Laboratories ; E.F. O'Neill, editor.
Telephone -- History.
Telecommunication cables -- United States -- History.
Telecommunication lines -- History.
Telecommunication -- Research -- United States -- History.
O'Neill, E. F.
AT & T Bell Laboratories.