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pdf BTL History 2: National Service 1978 Popular

1043 downloads

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BTL_History_2_500-468_National_Service_1925-75_tci_ocr.pdf

768 pages, 80 MB, 500-468, A History of Engineering and Science in the Bell System - National Service in War and Peace (1925-1975). Missing pages 24, 25 and 504. Contributed by Sam Etler. Processed by Paul Fassbender

pdf BTL History 5: Communication Sciences 1985 Popular

833 downloads

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BTL_History_5_500-471_Comm_Sciences_1925-80_tci_ocr.pdf

541 pages, 44 MB, 500-471, A History of Engineering and Science in the Bell System - Communications Sciences (1925-1980). Contributed by Sam Etler. Processed by Paul Fassbender.

pdf BTL History 7: Transmission Technology 1985 Popular

987 downloads

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BTL_History_7_500-473_Transmission_Tech_1925-75_tci_ocr.pdf

825 pages, 83 MB, 500-473, A History of Engineering and Science in the Bell System - Transmission Technology (1925-1975). Missing page 566. Contributed by Sam Etler. Processed by Paul Fassbender.

pdf BTL History 6: Electronics Technology (1925-1975) Popular

5278 downloads

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BTL_History_Electronics_Technology_1925-1975_HESBS_v6_1985_ocr_tci.pdf

BTL History 6: Electronics Technology  (1925-1975)

370 pages, 8MB. A History of Engineering and Science in the Bell System - Electronics Technology (1925-1975). Copyright and First Printing 1985. Chapters on the Transistor, Silicon Integrated Circuits, Electron Tubes, Optical Devices, Magnetic Memories, Piezoelectric Devices, Relays and Switches, Capacitors and Resistors, and Thin-Film Circuits. Contributed, scanned and OCRed by Sam Etler. Cover, bookmarks and size reduction by Karl Brose. Processed by Paul Fassbender.

pdf ATT 1977 - Telecommunications Transmission Engineering Popular

1870 downloads

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ATT_1977_Telecommunications_Transmission_Engineering_tci.pdf

ATT 1977 - Telecommunications Transmission Engineering

2,098 pages. Communication Engineering is concerned with the planning, design, implementation, and operation of the network of channels, switching machines, and user terminals required to provide communication between distant points.

This three-volume book is written for the practicing Transmission Engineer and for the student of transmission engineering.

Contributed and optimized for viewing on mobile devices by Karl Brose. Processed by Paul Fassbender.

pdf BTL History: Engineering and Operations in the Bell System, 2nd Ed - 1984 Popular

1906 downloads

Download (pdf, 47.58 MB)

Engineering_and_Operations_in_the_Bell_System_2nd_Ed_1984_tci-ocr.pdf

BTL History: Engineering and Operations in the Bell System, 2nd Ed  - 1984

902 pages. 48MB. Processed and Bookmarked by Steph Kerman.

pdf BTL History 1: The Early Years (1875-1925) - 1975 Popular

2322 downloads

Download (pdf, 49.32 MB)

History_of_Engineering_and_Science_in_the_Bell_System_-_The_Early_Years_1875-1925_tci.pdf

BTL History 1: The Early Years (1875-1925) - 1975

1090 pages. 50MB. A History of Engineering and Science in the Bell System - The Early Years (1875-1925). First printing - 1975. Text searchable. Relatively low res images to keep file size low.  Find higher resolution images in the version posted on archive.org (about 380MB), but it is missing pages 446-7, 556-7, 664-5, 942-3 and 994-5. Processed by Karl Brose, Jack Ryan, Sam Hallas and Paul Fassbender.

pdf BTL History 4: Physical Sciences - 1983 Popular

2192 downloads

Download (pdf, 35.81 MB)

BTL_History_Physical_Sciences_1983_tci.pdf

BTL History 4: Physical Sciences - 1983

687 pages. 36MB. A History of Engineering and Science in the Bell System.  Physical Sciences (1925 - 1980), 1983.   Contributed by Sam Etler, with post-processing by Clint Gilliland. 

pdf BTL History 3: Switching Technology - 1982 Popular

2772 downloads

Download (pdf, 33.80 MB)

BTL_History_Switching_Systems_1982_tci.pdf

BTL History 3: Switching Technology - 1982

652 pages. 34MB. A History of Engineering and Science in the Bell System.  Switching Technology (1925 - 1975), 1982.  Contributed by Sam Etler, with post-processing by Clint Gilliland. 

pdf AT&T Events In Telephone History - 1974 Popular

2608 downloads

Download (pdf, 43.68 MB)

ATT_Events_in_Telephone_History_1974_tci_ocr.pdf

AT&T Events In Telephone History - 1974

94 pages. 43MB. One of several issues published (and expanded) between 1958 and 1992. Contributed by Steve Cichorsky.  OCR by Clint Gilliland.

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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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