pdf 20apr Bell Tel News - Cleveland Tel - Vol IX Apr20 - Machine Switching Popular
By Paul F 1532 downloads
20apr_Bell_Tel_News_Cleveland_Tel_Vol-IX-Apr20_-_Machine_Switching_tci-ocr.pdf
Special issue. Interesting early perspective on the adoption of Machine Switching in the Bell System. Contributed by the Connections Museum. Processing by Remco Enthoven and Paul Fassbender.
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