- Back
-
Title: Dictograph telephone and office exchange [Go to resource]
Description: Dictograph telephone and office exchange License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 2004-206 Go to resource More Like this...-
Dictograph loudspeaking "master" house-telephone…Dictograph loudspeaking "master" house-telephone unit
[Edit] - Back