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Folder Publications and Educational Documents (by Date)

Organized by year of publication (if known).

Categories

Folder AT&T Radio Notes

AT&T Radio Notes

by the Operation and Engineering Department. Began around 1946.
Thanks to Terry Michaels for contributing 29 issues to get this section started. More issues are welcome.

Folder Bell System History Reference Books

Folder Bell Telephone Quarterly / Bell Telephone Magazine

Renamed from BTQ to BTM in 1941.

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 from Sept. 1925 - Dec. 1961 were available here:
  https://worldradiohistory.com/Bell_Laboratories_Record_Issue_Key.htm

Folder BSTJ - Bell System Technical Journal

In addition to individual scans posted here, see the index to the on-line BSTJ Archive ...

   Bell System Technical Journal Index with Links - 1922 - 1983

Folder Railway Telephones

Folder Western Electric - Fundamentals of Telephony

Documents

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

983 downloads

Download (pdf, 1.07 MB)

WE_News_3-25_No.1_p35-37_-_Improved_Apparatus_Aids_Tandem_Switching_ocr.pdf

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

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. 

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

1475 downloads

Download (pdf, 1.63 MB)

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 Los Angeles Call Indicator Conversion Ptm May 1924 Ocr R Popular

984 downloads

Download (pdf, 4.52 MB)

los_angeles_call_indicator_conversion_ptm_may_1924_ocr_r.pdf

Los Angeles Call Indicator Conversion Ptm May 1924 Ocr R

Contributed by Steve Cichorsky.  OCR by Clint Gilliland.

pdf Panel Machine Switching Demonstration Ptm March 1924 Ocr R Popular

742 downloads

Download (pdf, 3.26 MB)

panel_machine_switching_demonstration_ptm_march_1924_ocr_r.pdf

Panel Machine Switching Demonstration Ptm March 1924 Ocr R

Contributed by Steve Cichorsky.  OCR by Clint Gilliland.

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

986 downloads

Download (pdf, 8.56 MB)

1949_Notes_on_the_New_500_Telephone_Set_tci_ocr_r.pdf

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

Notes on the Discussions at the May 1949 Conference of Bell System Lecturers - covers the new 500 set design.
- Transmission Characteristics of the New Telephone Set, W. C. Jones, p 75-87
- Components of the New Telephone Set, W. L. Tuffnell, p 88-110
Contributed by Steve Cichorsky.  OCR by Clint Gilliland.

pdf NY Tel Telephone Review - Mar 1934 Ocr R Popular

947 downloads

Download (pdf, 16.62 MB)

NY_Tel_Telephone_Review_-_Mar_1934_ocr_r.pdf

NY Tel Telephone Review - Mar 1934 Ocr R

Contributed by Steve Cichorsky.  OCR by Clint Gilliland.

pdf ATT Plan Of Reorganization Dec82 Popular

1124 downloads

Download (pdf, 27.79 MB)

ATT_Plan_Of_Reorganization_Dec82.pdf

ATT Plan Of Reorganization Dec82

Contributed by Sam Etler.

pdf NYTel Telephone Review - Aug-34 Ocr R

22 downloads

Download (pdf)

NYTel_Telephone_Review_-_Aug-34_ocr_r.pdf

Contributed by Steve Cichorsky.  OCR by Clint Gilliland.

pdf NY Tel Telephone Review - March 1934 Ocr JR Popular

839 downloads

Download (pdf, 1.53 MB)

34mar_TelRev_ocr_JR.pdf

NY Tel Telephone Review - March 1934 Ocr JR

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

pdf NY Tel Telephone Review - Apr 1934 Ocr R Popular

855 downloads

Download (pdf, 17.56 MB)

NY_Tel_Telephone_Review_-_Apr_1934_ocr_r.pdf

NY Tel Telephone Review - Apr 1934 Ocr R

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

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

1054 downloads

Download (pdf, 2.80 MB)

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 22 WE Railroad Tel Selective Apparatus P38 Bells And Gongs Popular

1882 downloads

Download (pdf, 1.54 MB)

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

745 downloads

Download (pdf, 8.96 MB)

Pac_Tel_Our_Family_Album_Photos_1884_1922_ocr_r.pdf

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

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

pdf WE Railroad Telephone and Selective Apparatus - 1922 OCR [LARGE FILE] Popular

1289 downloads

Download (pdf, 19.61 MB)

22_WE_Railroad_Tel_Selective_Apparatus_ocr_r.pdf

WE Railroad Telephone and Selective Apparatus - 1922 OCR [LARGE FILE]

20MB. 55 pages. T-66[8]?  Text-searchable. Circuits, Apparatus, Sets, Testing, Semaphore, Cables, Cords, Howlers, etc.  Contributed by Steve Cichorsky.  OCR / Size reduction by Clint Gilliland.

pdf WE Railroad Telephone and Selective Apparatus - 1922 [LARGE FILE] Popular

1304 downloads

Download (pdf, 61.21 MB)

22_WE_Railroad_Tel_Selective_Apparatus.pdf

WE Railroad Telephone and Selective Apparatus - 1922 [LARGE FILE]

63MB. 55 pages. T-66[8]?  Circuits, Apparatus, Sets, Testing, Semaphore, Cables, Cords, Howlers, etc.  Contributed by Steve Cichorsky

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

912 downloads

Download (pdf, 57.61 MB)

Pac_Tel_Our_Family_Album_Photos_1884_1922.pdf

Our Family Album - Pacific Telephone Photos from 1884-1922 [LARGE FILE]
58MB.  Contributed by Steve Cichorsky.

pdf 32apr BSTJ - "Cohering" - Capacitors in Handsets Popular

1516 downloads

Download (pdf, 31 KB)

Cohering__Capacitors_In_Handsets.pdf

32apr BSTJ - "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 38jan IndianaTelNews P5 Crossbar Switch For Dial Central Offices Popular

1414 downloads

Download (pdf, 5.64 MB)

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

1640 downloads

Download (pdf, 5.85 MB)

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 53nov PTM - San Franciscos Last Manual Exchange Popular

1878 downloads

Download (pdf, 6.52 MB)

53_PTM_San_Franciscos_Last_Manual_Exchange.pdf

53nov PTM - San Franciscos Last Manual Exchange

1953, Pacific Telephone Magazine. Contributed by Steve Cichorsky.

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