Folder Publications and Educational Documents (by Date)

Organized by year of publication (if known).

Categories

Folder BLR

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

pdf "Cohering" - Capacitors in Handsets Popular

By 277 downloads

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Cohering__Capacitors_In_Handsets.pdf

"Cohering" - Capacitors in Handsets
Extracts from the Bell System Technical Journal (April 1932) and several BSPs highlight reasons for adding capacitors to handsets.  BSPs referenced include C30.002, C32.203 and C32.275.  Contributed by Steve Cichorsky.

pdf 1938 Kearny Works Open House - Telephone Review Popular

By 556 downloads

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Western Electric- Kearny Works.pdf

1938 Kearny Works Open House - Telephone Review

"Thousands Visit Kearney's Wonder Workshop," Telephone Review, Dec 38, Starts on page 7.

pdf 1947-50 - 500 Telephone Pre-introduction Planning Memos Ocr Popular

By 367 downloads

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500_Telephone_Pre-introduction_Planning_1947-50_ocr_.pdf

1947-50 - 500 Telephone Pre-introduction Planning Memos Ocr

Several internal memos discussing transmission and zoning implications of the new 500-type sets.  Includes a mention of the 4,000 unit 1949 trial and projected production quantities for the 500B:  50Q2 - 23K, 50Q3 - 49K and 50Q4 - 49K; and for the 401B: 50Q4 - 20K.  Price for a 500B = $14.30.  Also see AB43.910  Contributed by Clint Gilliland.

pdf 1948 NYC (New York City) Exchange Areas Popular

By 474 downloads

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NYC Exchange Areas.pdf

pdf 1977 021B Terminology - Bell System Training Popular

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Terminology-A.pdf

1977 021B Terminology - Bell System Training

171 pages.? Provides a reference to common terms used in the 021 series of courses.? Marked for internal use within the Bell System.

Topics include: CO Equipment, Apparatus, Equipment, Cable & Wiring, Engineering Aids, References (e.g. Standards, Technical Design Manual, BSPs), and Ordering Apparatus.

pdf 20apr Bell Telephone News - Chicago TelCo - Machine Switching Ocr R Popular

By 792 downloads

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20apr_Bell_Telephone_News_-_Chicago_TelCo_Machine_Switching_ocr_r.pdf

20apr Bell Telephone News - Chicago TelCo - Machine Switching Ocr R

April 1920. Chicago Telephone Company. Feature article on Machine Switching in the Bell System.  Contributed by Steve Cichorsky. OCR by Clint Gilliland.

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

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22_WE_Railroad_Tel_Selective_Apparatus_p38_Bells and Gongs.pdf

22 WE Railroad Tel Selective Apparatus P38 Bells And Gongs

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

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

By 401 downloads

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interest-desire-enthusiasm-action_ptm_Feb_1924_ocr_r.pdf

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

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

pdf 35feb Pacific Telephone Magazine Tci Ocr R

By 72 downloads

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35feb_Pacific_Telephone_Magazine_tci_ocr_r.pdf

35feb Pacific Telephone Magazine Tci Ocr R

Contributed by Steve Cichorsky.  OCR by Clint Gilliland.

pdf 38jan IndianaTelNews P5 Crossbar Switch For Dial Central Offices Popular

By 299 downloads

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38jan_IndianaTelNews_p5_Crossbar_Switch_for_Dial_Central_Offices.pdf

38jan IndianaTelNews P5 Crossbar Switch For Dial Central Offices
Contributed by Steve Cichorsky.

pdf 38jan IndianaTelNews P7 Culver 740-AX PBX First Tel Exchange New Haven Popular

By 326 downloads

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38jan_IndianaTelNews_p7_Culver_740-AX_PBX __First_Tel_Exchange_New_Haven.pdf

38jan IndianaTelNews P7 Culver 740-AX PBX   First Tel Exchange New Haven
Contributed by Steve Cichorsky.

pdf 39jul BTL Monograph B-1166 Cold-Cathode Gas-Filled Tubes Popular

By 595 downloads

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39jul_BTL_Monograph_B-1166_Cold-Cathode_Gas-Filled_Tubes.pdf

pdf 43dec Pacific Tel Magazine - Christmas - TCI Ocr Op R

By 57 downloads

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43dec_Pacific_Tel_Magazine_-_Christmas_-_TCI_ocr_op_r.pdf

43dec Pacific Tel Magazine - Christmas - TCI Ocr Op R

Contributed by Steve Cichorsky.  OCR by Clint Gilliland.

pdf 500 Set Design - 1949 Popular

By 640 downloads

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500 Set Design- 1949.pdf

500 Set Design - 1949
Notes on the Discussions at the Conference of Bell System Lecturers, May 1949.  Detailed description of the new 500 set -- features and internal components. Introduction year.  Interesting speculations on possible future directions.

pdf 53nov PTM - San Franciscos Last Manual Exchange Popular

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53_PTM_San_Franciscos_Last_Manual_Exchange.pdf

53nov PTM - San Franciscos Last Manual Exchange

1953, Pacific Telephone Magazine. Contributed by Steve Cichorsky.

pdf 53sep PTM - Those Amazingly Popular Outdoor Payphones - 1953 Popular

By 376 downloads

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53sep_PTM_Those_Amazingly_Popular_Outdoor_Payphones.pdf

53sep PTM - Those Amazingly Popular Outdoor Payphones - 1953

September 1953, Pacific Telephone Magazine.  Includes photos.  Contributed by Steve Cichorsky.

pdf 53sep PTM - Two Piece Handset Telephones - "It's a Matter of Money" - 1953 Popular

By 347 downloads

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53sep_PTM_Two_Piece_Handset_Telephones_2.pdf

53sep PTM - Two Piece Handset Telephones - "It's a Matter of Money" - 1953

September 1953, Pacific Telephone Magazine.  Explains financial motivation for installing refurbed equipment.  Contributed by Steve Cichorsky.

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

By 275 downloads

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53sep_PTM_Those_Amazingly_Popular_Outdoor_Payphones_ocr_r.pdf

53sep PTM Those Amazingly Popular Outdoor Payphones Ocr R
September 1953, Pacific Telephone Magazine. Includes photos. Contributed by Steve Cichorsky. OCR by Clint Gilliland.

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

By 391 downloads

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53sep_PTM_Those_Amazingly_Popular_Outdoor_Payphones_ocr_r2.pdf

53sep PTM Those Amazingly Popular Outdoor Payphones Ocr R2

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

pdf 58mar WE P22 Plastics

By 63 downloads

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58mar_WE_p22_Plastics.pdf

58mar WE P22 Plastics

Contributed by Karl Brose.

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Thanks for new documents from Chuck Hensley, John Gilbert, Chuck Batson, Alan David, Steve Flocke, Paul Wills, Dave Gruger, Jim Prather, John Stancliff, Sam Etler, John Novack, Clint Gilliland, Steve Cichorsky and Paul Fassbender.

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