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Bell System, a former American telephone system, governed by American Telephone & Telegraph Company (now AT&T Corporation; q.v.) and including Western Electric Company (q.v.), the system’s manufacturer; Bell Laboratories (q.v.), the research and development facility; and other departments

This collection contains 145,000 items, some 4,695 of which are online. Among the contents correspondence, scientific notebooks, journals, blueprints, articles, and photographs documenting Bell's invention of the telephone and his involvement in the first telephone company, among other things.

Before AT&T was broken up in 1984 by court order, the Bell System referred to AT&T and all the Bell Telephone companies that were part of it, but had separate names to provide a regional flavor.

Architecture Spotlight: Bell Telephone Building-A Monument to Talk. cindy casey. The building that stands at 140 New Montgomery was built in 1925 for the Pacific Telephone Company, part of the ...

This monopoly was known as the Bell System, [29] and during this period, AT&T was also known by the nickname Ma Bell. [30] Breakup and reformation (1982–2004)[] Further information: Breakup of the Bell System, History of AT&T § Breakup, and History of AT&T § Post break-up restructuring