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

Categories

Documents

pdf 51Sep BLR P414 500 Set Tuffnell Popular

By 420 downloads

Download (pdf, 818 KB)

51Sep_BLR_p414_500_Set_Tuffnell.pdf

Contributed by Chuck Hensley.

pdf 52apr BLR P183 Army Telephone Popular

By 400 downloads

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52apr_BLR_p183_Army_Telephone.pdf

52apr BLR P183 Army Telephone

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 52aug BLR P317 500 Handset G1 T1 U1 Popular

By 435 downloads

Download (pdf, 620 KB)

52aug_BLR_p317_500_Handset_G1_T1_U1.pdf

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 52dec BLR P456 Telephone Repair Reuse Popular

By 423 downloads

Download (pdf, 620 KB)

52dec_BLR_p456_Telephone_Repair_Reuse.pdf

52dec BLR P456 Telephone Repair Reuse

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 52jan BLR P12 Lettered Dial Popular

By 446 downloads

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52jan_BLR_p12_Lettered_Dial.pdf

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 52jul BLR P295 JKT Station Wire Popular

By 476 downloads

Download (pdf, 534 KB)

52jul_BLR_p295_JKT_Station_Wire.pdf

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 52may BLR P205 507 PBX Popular

By 1113 downloads

Download (pdf, 785 KB)

52may_BLR_p205_507_PBX.pdf

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 52may BLR P211 500 Dial 7A Popular

By 474 downloads

Download (pdf, 833 KB)

52may_BLR_p211_500_Dial_7A.pdf

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 53apr BLR P130 U1 Receivers Adjustment Popular

By 401 downloads

Download (pdf, 1.13 MB)

53apr_BLR_p130_U1_Receivers_Adjustment.pdf

53apr BLR P130 U1 Receivers Adjustment

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 53apr BLR P158 Installers Tool Case Popular

By 418 downloads

Download (pdf, 156 KB)

53apr_BLR_p158_Installers_Tool_Case.pdf

53apr BLR P158 Installers Tool Case

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 53jan BLR P22 Early Dial Systems Popular

By 578 downloads

Download (pdf, 1.35 MB)

53jan_BLR_p22_Early_Dial_Systems.pdf

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 53jan BLR P9 Lag Linemans Wrench Popular

By 464 downloads

Download (pdf, 267 KB)

53jan_BLR_p9_Lag_Linemans_Wrench.pdf

53jan BLR P9 Lag Linemans Wrench

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 53jun BLR P236 Robot Secretary Popular

By 351 downloads

Download (pdf, 237 KB)

53jun_BLR_p236_Robot_Secretary.pdf

53jun BLR P236 Robot Secretary

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 53nov BLR P439 1A Answering Set Popular

By 391 downloads

Download (pdf, 1.35 MB)

53nov_BLR_p439_1A_Answering_Set.pdf

53nov BLR P439 1A Answering Set

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 53oct BLR P407 Cords Machine Popular

By 349 downloads

Download (pdf, 739 KB)

53oct_BLR_p407_Cords_Machine.pdf

53oct BLR P407 Cords Machine

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 53sep BLR P342 Trains Payphone Popular

By 502 downloads

Download (pdf, 1.89 MB)

53sep_BLR_p342_Trains_Payphone_tci_ocr.pdf

53sep BLR P342 Trains Payphone

Bell Labs Record.  Train coin collector. Contributed by Chuck Hensley.

pdf 54Feb BLR P69 Dial Governors Popular

By 453 downloads

Download (pdf, 961 KB)

54Feb_BLR_p69_Dial_Governors.pdf

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 54Mar BLR P96 Telephone Hazardous Areas KS14476 Popular

By 419 downloads

Download (pdf, 340 KB)

54Mar_BLR_p96_Telephone_Hazardous_Areas_KS14476.pdf

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 54May BLR P197 Coinless Payphone Popular

By 411 downloads

Download (pdf, 224 KB)

54May_BLR_p197_Coinless_Payphone.pdf

54May BLR P197 Coinless Payphone

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 54Nov BLR P439 Hard of Hearing 532 Popular

By 380 downloads

Download (pdf, 228 KB)

54Nov_BLR_p439_Hard_Hearing_532.pdf

Bell Labs Record.  Contributed by Chuck Hensley.

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

Recent Contributors

Thanks for new documents from Jim Hurtle, Ed Palazzo, Paul Fassbender, Bruce Patterson, Remco Enthoven, Jon Kolger, Paul Ivester, Len Hicken, Fred Haynes, Kurt Rudolph, Wade ("Kellogg KITT"), the Connections Museum, Rick Walsh, Jeff Lamb, Jeremy Walters, Alan David, Dennis Hock, and Tim Griffin.

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