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Bell System Documents

A large collection of scanned documents and related material associated with the American telephone company, known as the Bell System.



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Bell System Books
Bell System Books
collection
90
ITEMS
19,186
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collection

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This collection contains books published by the Bell System and its subsidiaries.
Bell System Drawings
Bell System Drawings
collection
338
ITEMS
23,177
VIEWS
collection

eye 23,177

Blueprints, documentation and plans related to the US Telephone System (Ma Bell, Bell Telephone).
Bell System Magazines
Bell System Magazines
collection
39
ITEMS
3,392
VIEWS
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Magazines from various factions and departments of the Bell Telephone System.
Bell System Books
by M.D. Fagen, Bell Telephone Laboratories
texts

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A History of Engineering and Science in the Bell System The Early Years (1875 - 1925) Prepared by Members of the Technical Staff, Bell Telephone Laboratories M.D. Fagen, Editor. Bell Telephone Laboratories, Incorporated
Topics: bell system, history of engineering and science, bell laboratories, at&t
Bell System Books
by Illinois Bell Telephone Co.
texts

eye 437

favorite 5

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The Bell Telephone News Volume Nine April, 1920
Topics: bell system, at&t, magazine, telephone, periodicals, 1920s
Bell System Magazines
by Western Electric Co., Inc.
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WE (Western Electric) magazine
Topics: western electric, bell system, telephony, 1980s
Bell System Ephemera
Bell System Ephemera
collection
6
ITEMS
1,145
VIEWS
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eye 1,145

Miscellaneous documents related to the Bell System.
Bell System Practices
Bell System Practices
collection
397
ITEMS
8,933
VIEWS
collection

eye 8,933

The Bell System Practices were a set of documents produced by the American Telephone and Telegraph Company to instruct employees on the proper use and maintenance of all kinds of telephone equipment. As these materials span decades of the history of (what was at the time) the world's largest corporation, the quality varies widely. Some documents are carefully phototypeset originals, some are enlargements from microfilm, and still others are third-generation photocopies of typewritten originals.
Topics: Bell System, telephone, ATT, American Telegraph and Telephone, phone equipment, manuals
Bell System Ephemera
texts

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A Western Electric brochure touting the benefits of the 5ETS add-on for the No. 5 Crossbar switching system.
Topics: bell system, #5 crossbar, telephony, switching
Bell System Books
by Bell Telephone Laboratories, Incorporated
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A 5XB Schoolbook, containing Operational Sketches From the Connections Museum, Seattle
Topics: bell system, 5xb, 5 crossbar, telephone switch, western electric, at&t
Bell System Magazines
by Western Electric Co., Inc.
texts

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WE (Western Electric) magazine
Topics: western electric, bell system, telephony, 1980s
Bell System Books
by Bell Telephone Laboratories, Incorporated
texts

eye 2,744

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The Electronic Switching System. Trial Installation, Morris, Illinois: General Description. Private Edition. Published April 1960 by Bell Telephone Laboratories, Incorporated in Whippany, New Jersey, USA. Copy #294. "The ESS can diagnose most of its own troubles and can identify the sources of trouble. But it still needs a maintenance staff well trained in the basic principles of the system. This book constitutes part of the educational material required for training such a staff; it is...
Topics: telephone, textbook, bell system, bell telephone laboratories
Bell System Books
by Operation and Engineering Department
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Bell System training document with sequence charts and operational sketches of Panel Dial System circuits. This volume covers only the GCO (Ground Cut-Off) variant of the Panel system.
Topics: panel switch, bell system, telephony, switching
Bell System Books
by Bell Telephone Laboratories, Incorporated
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A schoolbook used to teach craftspeople how the No. 5 Crossbar works. From the Connections Museum, Seattle
Topics: 5xb, crossbar, telephone switch, at&t, bell system, bell labs, western electric
Bell System Magazines
by Western Electric Co., Inc.
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WE (Western Electric) magazine
Topics: western electric, bell system, telephony, 1980s
Bell System Books
by Western Electric Company
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Machine Switching Equipment Notes Volume I Reprints of papers used for training purposes by the Engineering Department of the Western Electric Company for the term 1920-21 Sketches, illustrations and drawings are located in Volume II From the collection of the Connections Museum, Seattle WA
Topics: western electric, machine switching, panel switch, bell system, at&t
Bell System Drawings
by Bell Telephone Laboratories Incorporated
texts

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Bell System Magazines
by Western Electric Co., Inc.
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WE (Western Electric) magazine
Topics: western electric, bell system, telephony, 1980s
Bell System Books
by Bardeen, J. and Brattain, W. H., Bell Telephone Laboratories
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A description of the semiconductor physics involved in transistor action.
Topic: semiconductor charge electron hole mobility
Bell System Drawings
texts

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Topics: panel switch, circuit description, bell system, telephone switching, AT&T
Bell System Drawings
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Topics: panel switch, circuit description, bell system, telephone switching, AT&T
Bell System Books
by Bell Telephone Laboratories, Inc.
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X-62724 - Standard Drafting Practices for the Preparation of Circuit Drawings
Topics: western electric, bell system, telephony, drafting
Bell System Books
by Bell Telephone Laboratories
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A compendium of Bell System Technical Journal articles concerning the No. 1 Crossbar.
Topics: 1xb, crossbar switch, bell system, connections museum, telephone switch
Bell System Books
by C.A. Collins, C.H. McCandless
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Bell System training document with illustrations of the physical frames of the No. 1 Crossbar telephone switch. Part of a larger volume containing photographs, detailed descriptions, and schematic drawings.
Topics: crossbar, bell system, telephony, switching
Bell System Magazines
by Western Electric Co., Inc.
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WE (Western Electric) magazine
Topics: western electric, bell system, telephony, 1980s
Bell System Books
texts

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Overview of 100 years of Western Electric corporate history.
Topics: western electric, bell system, telephony
Bell System Magazines
by Pacific Telephone & Telegraph Company
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Bell System Drawings
by Bell Telephone Laboratories Incorporated
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Bell System Drawings
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Topics: panel switch, circuit description, bell system, telephone switching, AT&T
Bell System Books
by Western Electric Co.
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Western Electric Company Instructional Bulletin No. 409 The 6-B transmitter is a 1kW AM radio transmitter developed by Bell Laboratories and manufactured by Western Electric. From the library at the Connections Museum, Seattle WA
Topics: western electric, bell labs, radio transmitter, am radio, 6-b radio transmitter, 6b radio...
Bell System Magazines
by Western Electric Co., Inc.
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WE (Western Electric) magazine
Topics: western electric, bell system, telephony, 1980s
Bell System Documents
by Bell Telephone Laboratories, Incorporated
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This specification provides general requirements applicable to the recovery or repair for reissue (class C) of circuit packs and printed wiring board assemblies.
Topics: bsrs, printed wiring board, pcb
Bell System Books
by Western Electric Co.
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Original from telephonecollectors.info Polished it up and made it look not-quite-so-bad.
Topics: telephones, western electric, bell system
Bell System Drawings
by Western Electric Co.
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Topics: panel switch, circuit description, bell system, telephone switching, AT&T
Topics: panel switch, circuit description, bell system, telephone switching, AT&T
Bell System Magazines
by Pacific Telephone & Telegraph Company
texts

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Bell System Books
texts

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A schoolbook also used for quick reference by 5XB craftspersons. SEQUENCE CHARTS AND REFERENCE MATERIAL SERVICE FEATURES No. 5 CROSSBAR SYSTEM BELL TELEPHONE LABORATORIES, INCORPORATED SWITCHING SYSTEMS DEVELOPMENT DEPARTMENT 463 WEST ST. NEW YORK, 14 From the Connections Museum, Seattle WA
Topics: crossbar, 5xb, bell system, telephone switching
Bell System Books
by Pacific Telephone & Telegraph Company
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Volume 16 number 4 of the Pacific Telephone Magazine
Topic: pacific telephone
Bell System Books
by Bardeen, J. and Brattain, W. H., Bell Telephone Laboratories
texts

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Describes a three-element device which utilizes a newly discovered principle involving a semiconductor as the basic element.
Topic: semiconductor transistor germanium contact
Bell System Drawings
texts

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Topics: panel switch, circuit description, bell system, telephone switching, AT&T
Bell System Books
texts

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A rollicking history of the telephone system and the hackers who exploited its flaws.
Topic: telephone hack phreak
Bell System Magazines
by Pacific Telephone & Telegraph Company
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Bell System Books
by Smith, K. D., Bell Telephone Laboratories
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Relation of design variables to equivalent circuit parameters for the M1752 development transistor.
Topic: transistor parameter design equivalent circuit
This circuit provides for intercommunication between maintenance men in the switch room, for clearing permanent signals due to the calling party holding the connector and for one-way transmission tests of connectors.
Topics: step, trunk, test
Bell System Drawings
by American Telephone & Telegraph Co.
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PANEL SYSTEMS SUBSCRIBER SENDER CIRCUIT 3-1 3-2, OR 2 DIGIT NON COIN ARRANGED WHEN REQUIRED FOR FOUR CLASSES OF SERVICE  FOR USE WITH SENDER SELECTORS AND DECODER CIRCUITS  From the Connections Museum, Seattle WA.
Topics: bell system, circuit description, panel switch, subscriber's senders
Bell System Books
by Bell Telephone Laboratories, inc.
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This is is one of a series of Engineering Reference Data Bulletins containing information on tools and gauges designed by the Bell Telephone Laboratories, for other than Military Applications, and manufactured by the Western Electric Company or by other sup­pliers in accordance with specifications prepared by the Laboratories. It is intended primarily for use by engineers of the Laboratories, and contains information on apparatus which may be rated AT&T Co Standard or A&M Only; codes...
Topics: bell system, bell labs, tools, telephone, telephone switching
Bell System Books
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Short book detailing Bell System relays.
Topics: relays, western electric, bell system, telephony
Topics: panel switch, circuit description, bell system, telephone switching, AT&T
Bell System Books
by Western Electric Co.
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Bell System training document giving a general overview of the Panel type telephone switch. Part of a course in central office equipment.  Cover text reads:  PANEL DIAL TELEPHONE SYSTEM  Telephone Systems Training COURSE: CENTRAL OFFICE EQUIPMENT  LESSON NO. 4 Issued, March 1937 Revised, January 1948 Reissued, December 1953 Western Electric Company, Inc. Hawthorne Works Personnel Service Branch Training Department
Topics: panel switch, bell system, telephony, switching
Bell System Books
by Pacific Telephone & Telegraph Company
texts

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Bell System Books
by Pacific Telephone & Telegraph Company
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Bell System Magazines
by Pacific Telephone & Telegraph Company
texts

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Bell System Magazines
by Pacific Telephone & Telegraph Company
texts

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Topics: panel switch, circuit description, bell system, telephone switching, AT&T
Bell System Books
by American Telephone & Telegraph Co.
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Bulletin No. 17 (Preliminary) December 1920 American Telephone and Telegraph Company Department of Development and Research Maintenance Instructions Panel Type Machine Switching System Douglas and Tyler Offices, Omaha
Topics: panel system, bell system, at&t, first panel office, electromechanical switching
Bell System Documents
by Bell Telephone Laboratories, Incorporated
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This specification covers the cording for equipped A-type handset mountings, B-type hand telephone sets and 102, 103, 202, 203, 204, 205, 208, and 215-types of hand telephone sets.
Topics: bsrs, D-353.251, desk set
Bell System Drawings
texts

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Bell System Drawings
by Bell Telephone Laboratories Incorporated
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Bell System Drawings
texts

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Bell System Drawings
by Bell Telephone Laboratories Incorporated
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Bell System Drawings
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SD-69076 Station Systems Key Equipment no. 101A, 101B, or 102A and Switching System no. 302, Line Circuit, or Ringdown Tie Line Circuit
Topics: 101a, 101b, 102a, 302
Bell System Books
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Original AT&T internal educational publication on the crossbar tandem (XBT) switching system. This switch was a "tandem" switch, and was used to route calls between local central offices only. This type of switch did not have any subscriber lines provisioned to it. The intended audience for this document was switchmen, and the material was most likely delivered in a classroom environment. From the library of the Connections Museum, Seattle
Topics: bell system, at&t, crossbar tandem, crossbar switch, telephony, at&t, crossbar tandem,...
Bell System Books
by Bell Telephone Laboratories, inc; Fletcher, Harvey, 1884-1981; Riesz, R. R; Galt, R. G
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Bell Telephone System Technical Publications Monograph B, Issues 31-34 The Binaural Location Of Complex Sounds  A Color-Match Photometer For Illuminants  The Crystal Structures Of The System Palladium-Hydrogen The Crystal Structures Of Silver-Palladium, Silver-Gold, And Iron-Nickel Alloys 
Topic: Monograph B
Bell System Books
by Bell Telephone Laboratories, inc; Fletcher, Harvey, 1884-1981; Riesz, R. R; Galt, R. G
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Bell Telephone System Technical Publications Monograph B, Issue 29: Power Losses In Insulating Materials: E.T. Hoch March 1923
Topics: Electric insulators and insulation, Dielectrics
Bell System Magazines
by Pacific Telephone & Telegraph Company
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Bell System Magazines
by Pacific Telephone & Telegraph Company
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Bell System Magazines
by Pacific Telephone & Telegraph Company
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Bell System Magazines
by Pacific Telephone & Telegraph Company
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Bell System Drawings
by Bell Telephone Laboratories
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SD-95277-01 Common Systems Transmission Measuring Milliwatt Distributing Ckt Using 71 Type Milliwatt Reference Generator (71A, 71B, & 71C mw ref gen) (71D & 71E network panels) SD-95277-02 Common Systems Transmission Measuring Milliwatt Distributing Ckt Using 71F Milliwatt Reference Generator
Topics: bell system, 95277, milliwatt
Bell System Drawings
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Topics: panel switch, circuit description, bell system, telephone switching, AT&T
Bell System Drawings
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Topics: panel switch, circuit description, bell system, telephone switching, AT&T
Bell System Drawings
texts

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Topics: panel switch, circuit description, bell system, telephone switching, AT&T
Bell System Drawings
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Topics: panel switch, circuit description, bell system, telephone switching, AT&T
Bell System Drawings
by Western Electric Co.
texts

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Topics: panel switch, circuit description, bell system, telephone switching, AT&T
Topics: panel switch, circuit description, bell system, telephone switching, AT&T