New User?

Read the articles under "Introduction"
in the black menu bar above.

 .

Publications and Educational Documents (by Date)

Organized by year of publication (if known).

Categories

Bell Laboratories Record Magazine

Bell Laboratories Record Magazine ( 278 Files )

See Chuck Hensley's comprehensive index to articles in the BLR in the folder below.  It can be used to locate articles to research, whether found in the TCI LIbrary or elsewhere.

Chuck has offered to scan a limited number of pages from his collection (at his convenience).  Send requests using the "Contact Us" link in the Menu Bar above.

HINT:  Search for "BLR" followed by a topic keyword to find a series of related articles.  Use alphabetic sort to display them in chronological order.  e.g.  BLR PBX  or  BLR Picturephone.

When posted, complete scanned BLR issues were available here:
  http://www.americanradiohistory.com/Bell_Laboratories_Record_Issue_Key.htm

Documents

Order by : Name | Date | Hits [ Ascendant ]

BTL History: Physical Sciences - 1983 Op R BTL History: Physical Sciences - 1983 Op R

Date added: 03/17/2013
Date modified: 03/17/2013
Filesize: 35.84 MB
Downloads: 764

A History of Engineering and Science in the Bell System.  Physical Sciences (1925 - 1980), 1983, 687 pages.   Contributed by Sam Etler, with post-processing by Clint Gilliland. 

C P Call Dec 1935 And Feb 1936 Ocr R C P Call Dec 1935 And Feb 1936 Ocr R

Date added: 03/16/2013
Date modified: 03/16/2013
Filesize: 1.46 MB
Downloads: 713

Contributed by Steve Cichorsky. 

PTM San Jose Dial Conversion Project March 29 1946 Ocr R PTM San Jose Dial Conversion Project March 29 1946 Ocr R

Date added: 03/16/2013
Date modified: 03/16/2013
Filesize: 967.71 kB
Downloads: 689

Contributed by Steve Cichorsky. 

PTM Sacramento Dial Cut-Over March 2 1941 Ocr R PTM Sacramento Dial Cut-Over March 2 1941 Ocr R

Date added: 03/16/2013
Date modified: 03/16/2013
Filesize: 733.26 kB
Downloads: 573

Contributed by Steve Cichorsky. 

53sep PTM Those Amazingly Popular Outdoor Payphones Ocr R2 53sep PTM Those Amazingly Popular Outdoor Payphones Ocr R2

Date added: 03/16/2013
Date modified: 08/27/2014
Filesize: 2.8 MB
Downloads: 817

September 1953. Includes photos of booths. Contributed by Steve Cichorsky. 

PT MP Flash No 610 - 88 Type Quick Connect - Aug77 PT MP Flash No 610 - 88 Type Quick Connect - Aug77

Date added: 07/18/2012
Date modified: 07/18/2012
Filesize: 326.78 kB
Downloads: 479

Pacific Telephone Methods & Practices FLASH, 8/15/77. 1977.  Do not use the 88-type wiring system at this time.  Contributed by Jeremy Walters. 

WE News 3-25 No.1 P35-37 - Improved Apparatus Aids Tandem Switching Ocr WE News 3-25 No.1 P35-37 - Improved Apparatus Aids Tandem Switching Ocr

Date added: 07/17/2012
Date modified: 07/17/2012
Filesize: 1.07 MB
Downloads: 590

Western Electric News, March 1925, pages 35-37.  Article by E. D, Hall.  Covers the evolution of the New York City exchange system from manual to Panel switching.

The main traffic diagram and the last two photos were quarter page size in the original publication. Scanned at high resolution and enlarged to full page - but the original coarse half-tone screen used in the photos limits the quality that can be gained.

Contributed by Steph Kerman. 

Transmission Characteristics And Components Of The New 500 Telephone Set Ocr R Transmission Characteristics And Components Of The New 500 Telephone Set Ocr R

Date added: 06/29/2012
Date modified: 06/29/2012
Filesize: 8.11 MB
Downloads: 820

Contributed by Steve Cichorsky.  OCR by Clint Gilliland.

Panel Machine Switching Demonstration Ptm March 1924 Ocr R Panel Machine Switching Demonstration Ptm March 1924 Ocr R

Date added: 06/29/2012
Date modified: 06/29/2012
Filesize: 3.26 MB
Downloads: 535

Contributed by Steve Cichorsky.  OCR by Clint Gilliland.

Los Angeles Call Indicator Conversion Ptm May 1924 Ocr R Los Angeles Call Indicator Conversion Ptm May 1924 Ocr R

Date added: 06/29/2012
Date modified: 06/29/2012
Filesize: 4.52 MB
Downloads: 546

Contributed by Steve Cichorsky.  OCR by Clint Gilliland.

24feb PTM - Interest-desire-enthusiasm-action  Ocr R 24feb PTM - Interest-desire-enthusiasm-action Ocr R

Date added: 06/29/2012
Date modified: 08/27/2014
Filesize: 1.63 MB
Downloads: 583

February 1924.  Machine dialing demonstrations and equipment.  Contributed by Steve Cichorsky.  OCR by Clint Gilliland.

Att Events In Telephone History 1974 Ocr R Att Events In Telephone History 1974 Ocr R

Date added: 06/29/2012
Date modified: 06/29/2012
Filesize: 41.51 MB
Downloads: 502

Contributed by Steve Cichorsky.  OCR by Clint Gilliland.

NY Tel Telephone Review - Mar 1934 Ocr R NY Tel Telephone Review - Mar 1934 Ocr R

Date added: 05/28/2012
Date modified: 05/28/2012
Filesize: 16.62 MB
Downloads: 522

Contributed by Steve Cichorsky.  OCR by Clint Gilliland.

ATT Plan Of Reorganization Dec82 ATT Plan Of Reorganization Dec82

Date added: 05/28/2012
Date modified: 05/28/2012
Filesize: 27.79 MB
Downloads: 472

Contributed by Sam Etler.

NYTel Telephone Review - Aug-34 Ocr R NYTel Telephone Review - Aug-34 Ocr R

Date added: 05/06/2012
Date modified: 05/06/2012
Filesize: Empty
Downloads: 22
Contributed by Steve Cichorsky.  OCR by Clint Gilliland.

NY Tel Telephone Review - March 1934 Ocr JR NY Tel Telephone Review - March 1934 Ocr JR

Date added: 03/28/2012
Date modified: 03/28/2012
Filesize: 1.53 MB
Downloads: 686

Mar34.  Contributed by Steve Cichorsky.  OCR by Jack Ryan.

NY Tel Telephone Review - Apr 1934 Ocr R NY Tel Telephone Review - Apr 1934 Ocr R

Date added: 03/17/2012
Date modified: 03/18/2012
Filesize: 17.56 MB
Downloads: 408

18MB. No. 10 Key Turret announcement. That Sales Organization of Ours.  Contributed by Steve Cichorsky.  OCR by Clint Gilliland.  [Original Archived]

53sep PTM Those Amazingly Popular Outdoor Payphones Ocr R 53sep PTM Those Amazingly Popular Outdoor Payphones Ocr R

Date added: 02/23/2012
Date modified: 02/23/2012
Filesize: 2.8 MB
Downloads: 423
September 1953, Pacific Telephone Magazine. Includes photos. Contributed by Steve Cichorsky. OCR by Clint Gilliland.

22 WE Railroad Tel Selective Apparatus P38 Bells And Gongs 22 WE Railroad Tel Selective Apparatus P38 Bells And Gongs

Date added: 01/30/2012
Date modified: 01/30/2012
Filesize: 1.54 MB
Downloads: 615

Extract showing the WE 392 ringer and gong shapes.  Contributed by Steve Cichorsky.

Our Family Album - Pacific Telephone Photos from 1884-1922 OCR [LARGE FILE] Our Family Album - Pacific Telephone Photos from 1884-1922 OCR [LARGE FILE]

Date added: 01/27/2012
Date modified: 01/27/2012
Filesize: 8.96 MB
Downloads: 470

9MB.  Contributed by Steve Cichorsky.  OCR / Size reduction by Clint Gilliland.

Recent Contributors

Thanks for new documents from David Gruger, Jeff Lamb, Walt Aydelotte, Dennis Hock, Steve Flocke, Paul Wills, Sam Etler, Fred Haynes, John Novack, Clint Gilliland, Steve Cichorsky and Karl Brose.

Please add your name to this list!

Who's Online

We have 563 visitors online

 

 

Telephone Collectors International was incorporated under the laws of the state of Kansas on May 13, 1986. The goal of the organization is "to educate the public, as well as the members of the Corporation, regarding the history of telephony, the value of old telephones and related items, their collectability and preservation; to research telephone history and publish and provide literature thereon; to promote the public exhibition of old telephones and related items; and to promote common courtesies and guidelines for use by the public." Telephone Collectors International is recognized by the Internal Revenue Service as a 501(c)(3) organization, to which U.S. tax deductible contributions can be made.