Smithsonian recently found a wax coated cardboard disc that is the recording of the voice of alexander graham bell. This is the very fist time we have heard the man who invented the telephone after 128 years
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Alexander Graham Bell's voice recording disc discovered 2013-04-29, 23:49
Re: Alexander Graham Bell's voice recording disc discovered 2013-04-30, 00:18
Re: Alexander Graham Bell's voice recording disc discovered 2013-04-30, 06:24
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