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

Categories

Documents

pdf 40aug BLR p369 321A Loudspeaking Tel Set and 2A Key Tel System Popular

By 327 downloads

Download (pdf, 6.73 MB)

40aug_BLR_p369_2A_Key_Tel_Sys_and_321_Loudspeaking_Tel_Set_A4.pdf

40aug BLR p369 321A Loudspeaking Tel Set and 2A Key Tel System

August 1941 Bell Labs Record.  Contributed by Steve Cichorsky.

pdf 40jul BLR P332 Drop Wire

By 85 downloads

Download (pdf, 1007 KB)

40jul_BLR_p332_Drop_Wire.pdf

40jul BLR P332 Drop Wire

Bell Labs Record.  Contributed by Chuck Hensley. 

pdf 40jul BLR P342 Sound Tests of Dials and Ringers

By 99 downloads

Download (pdf, 467 KB)

40jul_BLR_p342_Sound_Tests_of_Dials_and_Ringers.pdf

40jul BLR P342 Sound Tests of Dials and Ringers

Bell Labs Record.  Contributed by Chuck Hensley. 

pdf 40jun BLR P315 1A Key Telephone System Popular

By 105 downloads

Download (pdf, 1.25 MB)

40jun_BLR_p315_1A_Key.pdf

40jun BLR P315 1A Key Telephone System

Bell Labs Record.  Contributed by Chuck Hensley. 

pdf 40oct BLR P41 Telephone Explosive Atmosphere 320

By 79 downloads

Download (pdf, 711 KB)

40oct_BLR_p41_Telephone_Explosive_Atmosphere_320.pdf

Bell Labs Record.  Contributed by Chuck Hensley. 

pdf 41apr BLR "No Such Number: Tone for Dial Systems" Popular

By 481 downloads

Download (pdf, 2.24 MB)

41apr_BLR_No_Such_Number_Tone_for_Dial_Systems.pdf

41apr BLR "No Such Number: Tone for Dial Systems"

April 1941 Bell Labs Record. Contributed by Steve Cichorsky

pdf 41apr BLR National Defense And The Bell System Popular

By 317 downloads

Download (pdf, 26.92 MB)

41apr_BLR_National_Defense_and_the_Bell_System.pdf

41apr BLR National Defense And The Bell System

April 1941 Bell Labs Record.  Contributed by Steve Cichorsky.

pdf 41apr BLR p234 Remote Control For Reversible Program Circuits Popular

By 314 downloads

Download (pdf, 5.82 MB)

41apr_BLR_p234_Remote_Control_for_Reversible_Program_Circuits.pdf

41apr BLR p234 Remote Control For Reversible Program Circuits

April 1941 Bell Labs Record.

pdf 41aug BLR P380 Telephone Cords

By 74 downloads

Download (pdf, 620 KB)

41aug_BLR_p380_Telephone_Cords.pdf

41aug BLR P380 Telephone Cords

Bell Labs Record.  Contributed by Chuck Hensley. 

pdf 41dec BLR P106 Station Keys

By 70 downloads

Download (pdf, 1.42 MB)

41dec_BLR_p106_Station_Keys.pdf

41dec BLR P106 Station Keys

Bell Labs Record.  Contributed by Chuck Hensley. 

pdf 41nov BLR P76 Lineman Handset

By 89 downloads

Download (pdf, 279 KB)

41nov_BLR_p76_Lineman_Handset.pdf

41nov BLR P76 Lineman Handset

Bell Labs Record.  Contributed by Chuck Hensley. 

pdf 41nov BLR P77 Repairman's Test Set ''Pin'' Dial

By 90 downloads

Download (pdf, 303 KB)

41nov_BLR_p77_Buttin_Dial.pdf

41nov BLR P77 Repairman's Test Set ''Pin'' Dial

Bell Labs Record.  Contributed by Chuck Hensley. 

pdf 41oct BLR P34 Coin Collector Popular

By 115 downloads

Download (pdf, 644 KB)

41oct_BLR_p34_Coin_Collector.pdf

41oct BLR P34 Coin Collector

Bell Labs Record.  Contributed by Chuck Hensley. 

pdf 42aug BLR P295 Telephone Cords

By 84 downloads

Download (pdf, 1.04 MB)

42aug_BLR_p295_Telephone_Cords.pdf

42aug BLR P295 Telephone Cords

Bell Labs Record.  Contributed by Chuck Hensley. 

pdf 42mar BLR P178 300G Outdoor Set Popular

By 102 downloads

Download (pdf, 671 KB)

42mar_BLR_p178_300G_Outdoor_Set.pdf

42mar BLR P178 300G Outdoor Set

Bell Labs Record.  Contributed by Chuck Hensley. 

pdf 42May BLR P222 Small Ringer Popular

By 116 downloads

Download (pdf, 1013 KB)

42May_BLR_p222_Small_Ringer.pdf

42May BLR P222 Small Ringer

Contributed by Chuck Hensley.

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

By 161 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 42oct BLR P45 Hard of Hearing - 332 set Popular

By 115 downloads

Download (pdf, 748 KB)

42oct_BLR_p45_Hard_Hearing.pdf

42oct BLR P45 Hard of Hearing - 332 set

Bell Labs Record.  Contributed by Chuck Hensley. 

pdf 43Feb BLR P130 PBX For War Popular

By 152 downloads

Download (pdf, 1.15 MB)

43Feb_BLR_P130_PBX_For_War.pdf

43Feb BLR P130 PBX For War

War Department Office Building, Washington, DC.   Bell Labs Record. Contributed by Chuck Hensley.

pdf 43feb BLR P168 Operator Ad Popular

By 101 downloads

Download (pdf, 223 KB)

43feb_BLR_p168_Operator_Ad.pdf

Bell Labs Record.  Contributed by Chuck Hensley. 

New User?

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

Recent Contributors

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.

Please add your name to this list!

Who's online

We have 322 guests online