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 57Jun BLR P219 Operator Chairs Popular

By 279 downloads

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57Jun_BLR_P219_Operator_Chairs.pdf

57Jun BLR P219 Operator Chairs

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 57Jun BLR P231 Experimental Drive In Payphone Popular

By 145 downloads

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57Jun_BLR_P231_Experimental_Drive_in_Payphone.pdf

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 57Sep BLR P348 500 Set Distinctive Ringing

By 67 downloads

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57Sep_BLR_P348_500_Set_Distinctive_Ringing.pdf

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 58Apr BLR P149 New Booth

By 84 downloads

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58Apr_BLR_P149_New_Booth.pdf

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 58Aug BLR P308 New Station Apparatus Tests: Single Slot Payphone, Repertory Dialer

By 97 downloads

Download (pdf, 1.26 MB)

58Aug_BLR_P308_New_Station_Apparatus_Single_SlotCoin_Reperatory_Dialer.pdf

58Aug BLR P308 New Station Apparatus Tests: Single Slot Payphone, Repertory Dialer

Dialer capacity is 50 thirteen-digit numbers on dotched circular discs.  Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 58Aug BLR P352 Bedroom Set Prototype Princess Popular

By 102 downloads

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58Aug_BLR_P352_Bedroom_Set_Prototype_Princess.pdf

58Aug BLR P352 Bedroom Set Prototype Princess

Bell Laboratories Record.  Contributed by Chuck Hensley.

pdf 58Mar BLR P81 6A KTS Popular

By 124 downloads

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58Mar_BLR_P81_6A_KTS.pdf

58Mar BLR P81 6A KTS

Bell Laboratories Record.  Contributed by Chuck Hensley.

pdf 59Apr BLR P145 New Protector Popular

By 174 downloads

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59Apr_BLR_P145_New_Protector.pdf

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 59Apr BLR P151 500 Set Design Honor

By 82 downloads

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59Apr_BLR_P151_500_Set_Design_Honor.pdf

59Apr BLR P151 500 Set Design Honor

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 59Aug BLR Cover Push Button Telephone

By 84 downloads

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59Aug_BLR_Cover_Push_Button_Telephone.pdf

59Aug BLR Cover Push Button Telephone

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 59aug BLR P313 Experimental Pushbutton Set

By 94 downloads

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59aug_BLR_p313_Experimental_Pushbutton_Set.pdf

59aug BLR P313 Experimental Pushbutton Set

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 59Aug BLR P313 Push Button 500 Set Dataphone Card Reader

By 87 downloads

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59Aug_BLR_P313_Push_Button_500_Set_Dataphone_Card_Reader.pdf

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 59Dec BLR P464 Single Slot Coin Phone Trial Woodbridge Popular

By 132 downloads

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59Dec_BLR_P464_Single_Slot_Coin_Phone_Trial_Woodbridge.pdf

Bell Laboratories Record.  Contributed by Chuck Hensley.

pdf 59Jan BLR P23 PBX Crossbar Circuitry 756A Popular

By 108 downloads

Download (pdf, 1.52 MB)

59Jan_BLR_P23_PBX_Crossbar_Circuitry_756A.pdf

59Jan BLR P23 PBX Crossbar Circuitry 756A

Bell Laboratories Record.  Contributed by Chuck Hensley.

pdf 59May BLR P187 Telephone Cords Popular

By 110 downloads

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59May_BLR_P187_Telephone_Cords.pdf

59May BLR P187 Telephone Cords

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 59Nov BLR P430 Coin Disposal Mechanism

By 94 downloads

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59Nov_BLR_P430_Coin_Disposal_Mechanism.pdf

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 60Dec BLR P470 All Number Calling Popular

By 184 downloads

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60Dec_BLR_P470_All_Number_Calling.pdf

60Dec BLR P470 All Number Calling

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 60Feb BLR P71 WECo Production 1959 Popular

By 103 downloads

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60Feb_BLR_P71_WECo_Production_1959.pdf

60Feb BLR P71 WECo Production 1959

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 60Jan BLR P23 Experimental Dial In Handset Phone Popular

By 140 downloads

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60Jan_BLR_P23_Experimental_Dial_in_Handset_phone.pdf

60Jan BLR P23 Experimental Dial In Handset Phone

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 60Mar BLR P82 Push Button Dialing Media Hamden Elgin Popular

By 108 downloads

Download (pdf, 2.03 MB)

60Mar_BLR_P82_Push_Button_Dialing_Media_Hamden_Elgin.pdf

60Mar BLR P82 Push Button Dialing Media Hamden Elgin

Bell Laboratories Record. Contributed by Chuck Hensley.

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