Arkivism
Demonstrates Bell Laboratory wonders. Sergius P. Grace, Vice-President of the Bell Telephone Laboratories, shows the old and the new in telephones. That in his right hand is a model of Alexander Graham Bell's first telephone through which sounds were first electronically transmitted in 1875. The lar
Public domain

Demonstrates Bell Laboratory wonders. Sergius P. Grace, Vice-President of the Bell Telephone Laboratories, shows the old and the new in telephones. That in his right hand is a model of Alexander Graham Bell's first telephone through which sounds were first electronically transmitted in 1875. The lar

Harris & Ewing · 1930-01-01 · photo, print, drawing

From the collection of Library of Congress. Free to download, adapt and use — no permission needed.

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glass negativesunited states
Credit lineDemonstrates Bell Laboratory wonders. Sergius P. Grace, Vice-President of the Bell Telephone Laboratories, shows the old and the new in telephones. That in his right hand is a model of Alexander Graha. 1930-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
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