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 53oct BLR P407 Cords Machine Popular

343 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

493 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 52apr BLR P183 Army Telephone Popular

392 downloads

Download (pdf, 422 KB)

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

429 downloads

Download (pdf, 620 KB)

52aug_BLR_p317_500_Handset_G1_T1_U1.pdf

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 52jan BLR P12 Lettered Dial Popular

429 downloads

Download (pdf, 437 KB)

52jan_BLR_p12_Lettered_Dial.pdf

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 52jul BLR P295 JKT Station Wire Popular

468 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

1091 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

464 downloads

Download (pdf, 833 KB)

52may_BLR_p211_500_Dial_7A.pdf

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 50May BLR Cover Drop Test Popular

517 downloads

Download (pdf, 126 KB)

50May_BLR_cover_Drop_Test.pdf

50May BLR Cover Drop Test

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 42May BLR P222 Small Ringer Popular

484 downloads

Download (pdf, 1013 KB)

42May_BLR_p222_Small_Ringer.pdf

42May BLR P222 Small Ringer

Contributed by Chuck Hensley.

pdf 50Feb BLR Cover 500Set Popular

461 downloads

Download (pdf, 291 KB)

50Feb_BLR_cover_500_Set_tci.pdf

50Feb BLR Cover 500Set

Photo shows early number plate format. Contributed by Chuck Hensley.

pdf 51Dec BLR P545 Adjusting C Ringer Popular

473 downloads

Download (pdf, 822 KB)

51Dec_BLR_p545_Adjusting_C_Ringer.pdf

51Dec BLR P545 Adjusting C Ringer

Contributed by Chuck Hensley.

pdf 51Jan BLR P32 WECo Indianapolis Popular

698 downloads

Download (pdf, 418 KB)

51Jan_BLR_p32_WECo_Indianapolis.pdf

Contributed by Chuck Hensley.

pdf 51Nov BLR P511 500 Transmission 425A Network Popular

490 downloads

Download (pdf, 444 KB)

51Nov_BLR_p511_500_Transmission_425A_Network.pdf

51Nov BLR P511 500 Transmission 425A Network

Contributed by Chuck Hensley.

pdf 51Oct BLR P460 740E PBX Popular

663 downloads

Download (pdf, 1.27 MB)

51Oct_BLR_P460_740E_PBX_2.pdf

51Oct BLR P460 740E PBX

Bell Labs Record.  Contributed by Chuck Hensley.

pdf 51Oct BLR P471 500 Ringer C-type Popular

514 downloads

Download (pdf, 615 KB)

51Oct_BLR_p471_500_Ringer_C-type.pdf

51Oct BLR P471 500 Ringer C-type

Contributed by Chuck Hensley.

pdf 51Sep BLR P414 500 Set Tuffnell Popular

413 downloads

Download (pdf, 818 KB)

51Sep_BLR_p414_500_Set_Tuffnell.pdf

Contributed by Chuck Hensley.

pdf 42May BLR P222 Small Ringer B1A For 300 Series Popular

560 downloads

Download (pdf, 572 KB)

42May_BLR_p222_Small_Ringer_B1A_for_300_Series.pdf

42May BLR P222 Small Ringer B1A For 300 Series

Bell Labs Record.  Contributed by Chuck Hensley. 

pdf 26mar BLR P31 Protective Finish Popular

1419 downloads

Download (pdf, 538 KB)

26mar_BLR_p31_Protective_Finish.pdf

Bell Labs Record.  Contributed by Chuck Hensley. 

pdf 27aug BLR P427 - Dial Tester Popular

1383 downloads

Download (pdf, 682 KB)

27aug_BLR_p427_Dial_Tester.pdf

27aug BLR P427 - Dial Tester

Bell Labs Record.  Measuring Dial Speeds. Pendulum Dial Tester. Contributed by Chuck Hensley. 

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Thanks for new documents from Ed Palazzo, Bruce Patterson, Jon Kolger, Paul Ivester, Len Hicken, Paul Fassbender, Fred Haynes, Kurt Rudolph, Wade ("Kellogg KITT"), the Connections Museum, Rick Walsh, Jeff Lamb, Jeremy Walters, Mark Cuccia, Alan David, Harry Joseph, Charlie Terry, Karl Brose, Dennis Hock, Tim Griffin, Remco Enthoven, and Steve Cichorsky.

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