- Back
-
Title: Jones 50-line switchboard, 1879. [Go to resource]
Description: 50-line manual telephone switchboard by Jones Brothers, Cincinatti, USA, 1879 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: switchboards Temporal: 1879 Source: Science Museum Creator: Jones Bros. Identifier: http://collectionsonline.nmsi.ac.uk/grab... Go to resource More Like this...
[Edit] - Back