File:Photophone plaque (no copyright applies).jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	14:36, 6 August 2009		641 × 438 (64 KB)	Harryzilber	{{Information \|Description={{en\|1=An image of a historical plaque on the wall of the Franklin School in Washington, D.C., at 13th & K Streets NW., which marks one of the two building rooftops used by Alexander Graham Bell and Charles Sumner Tainter to con

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