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Title: Audiograph dictation machine by The Gray Manufacturing Co, H [Go to resource]
Description: Audiograph dictation machine by The Gray Manufacturing Co, Hartford, Conn, U.S.A. c. 1958. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Temporal: 1958 Source: Science Museum Creator: Gray Manufacturing Co. (maker) Identifier: 1982-962 Go to resource More Like this...
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