Folder Bell Telephone Quarterly / Bell Telephone Magazine

Renamed from BTQ to BTM in 1941.

Documents

Select Toggle Title Date Download
pdf 74sep BTM p10 - PhoneCenter Concept Grows (238 downloads) Popular Download (pdf, 2.42 MB)
pdf 67 BTM jul p18 - Dreyfuss - Adapting Products to People (449 downloads) Popular Download (pdf, 3.53 MB)
pdf 57Summer BTM P20 Developing Consumer Products (550 downloads) Popular Download (pdf, 623 KB)
pdf 59Winter BTM P6 Area Codes And ANC (723 downloads) Popular Download (pdf, 1.70 MB)
pdf 60Winter BTM P32 Field Trial Telephones (698 downloads) Popular Download (pdf, 245 KB)
pdf 62Winter BTM P10 101 ESS (613 downloads) Popular Download (pdf, 2.26 MB)
pdf 61Winter BTM P65 Magnetic Drum Telephone (581 downloads) Popular Download (pdf, 234 KB)
pdf 62Autumn BTM P10 All Number Calling (606 downloads) Popular Download (pdf, 1.22 MB)
pdf 62Spring BTM P17 Automatic Dialers (572 downloads) Popular Download (pdf, 902 KB)
pdf 65Autumn BTM P8 Trimline Intro (568 downloads) Popular Download (pdf, 1.44 MB)
pdf 65Summer BTM P54 Picturephone Business Experiments (547 downloads) Popular Download (pdf, 2.71 MB)
pdf 55Summer BTM P129 Designing the Telephone (500-series) (588 downloads) Popular Download (pdf, 1.20 MB)
pdf 61Spring BTM P32 Farm Interphone (1071 downloads) Popular Download (pdf, 686 KB)
pdf 61Summer BTM P10 Centrex (763 downloads) Popular Download (pdf, 1.06 MB)
pdf 63Autumn BTM P30 Touch Tone Service is Here (816 downloads) Popular Download (pdf, 943 KB)
pdf 64Spring BTM P14 Developing Picturephone Service (421 downloads) Popular Download (pdf, 1.38 MB)
pdf 54Spring BTM P51 Answering Set Photos (657 downloads) Popular Download (pdf, 175 KB)
pdf 55Winter BTM P232 Standardized Telephone Numbers (704 downloads) Popular Download (pdf, 1.58 MB)
pdf 47Autum BTM P127 Plastics In Telephone Plant (731 downloads) Popular Download (pdf, 6.81 MB)
pdf 48Spring BTM P9 Public Telephones (744 downloads) Popular Download (pdf, 1.80 MB)

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Recent Contributors

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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