Check our website for upcoming telephone shows

You are here: Home > Browse the Library > Document Repository > Catalogs, Manuals... > Western Electric/Bell System > Publications and Educational Documents (by Date) > Bell System History Reference Books > Extracts

Check out the TCI YouTube channel here. Please subscribe!

Check here for the 2024 Telephone Shows

Folder Extracts

Documents

Order by

pdf BTL History: Evolution of Switching in the Bell System - extract Popular

Published on 28 October 2009 Modified on 01 August 2021 By Paul F 1985 downloads

Download (pdf, 4.53 MB)

EandS Bell System- Step-by-Step.pdf

BTL History: Evolution of Switching in the Bell System - extract

From A History of Engineering and Science in the Bell System: Switching Technology. 16-page extract titled Step by Step Improvements (pages 22-37). WE installed AE switches until production started in 1926. SxS.

pdf BTL History: National Service - 1978 - Sw Sys 300 301 301A - extract Popular

Published on 02 February 2019 Modified on 01 August 2021 By Paul F 1136 downloads

Download (pdf, 2.76 MB)

BTL_History_National_Service_1978_Sw_Sys_300_301_301A_excerpt_tci-ocr.pdf

BTL History: National Service - 1978 - Sw Sys 300 301 301A - extract

From A History of Engineering and Science in the Bell System - National Service in War and Peace (1925-1975) - 1978
2.3 FAA Air-Route Traffic Control System
2.3.1 No. 300 Switching System

pdf BTL History: The Early Years (1875-1925) - 1975 - Extract - Ocr-op-r Popular

Published on 25 April 2014 Modified on 01 August 2021 By Paul F 2901 downloads

Download (pdf, 3.19 MB)

A_History_of_Engineering_and_Science_in_the_Bell_System_-_The_Early_Years_1875-1925_prelim_ocr-op-r.pdf

BTL History: The Early Years (1875-1925) - 1975 - Extract - Ocr-op-r

From A History Of Engineering and Science In The Bell System - The Early Years (1875-1925). 71 page extract includes Table of Contents, References (27 pages), Credits and Index (28 pages). Bookmarked. Contributed by Steph Kerman.

New User?

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

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.

Please send a file to add your name to this list!