Photograph as originally submitted to this page in the Historical Marker Database www.HMdb.org. Click on photo to resize in browser. Scroll down to see metadata.
Photophone Technical Drawing
Photographer: Drawn by Alexander Graham Bell (PD) via Wikimedia Commons
Taken: 1888
Caption: Photophone Technical Drawing
Submitted: September 21, 2015, by Allen C. Browne of Silver Spring, Maryland.
Database Locator Identification Number: p329826
File Size: 0.155 Megabytes

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