national museum of american history:
Alexander Graham Bell transcript: Unknown date
national museum of american history:
Disc containing Alexander Graham Bell's voice
national museum of american history:
Disc containing Alexander Graham Bell's voice
national museum of american history:
Carl Haber RWS2011-02415
national museum of american history:
Peter Alyea RWS2011-02425
national museum of american history:
Scanning the Recording RWS2011-02423
national museum of american history:
Sound Files RWS2011-02418
national museum of american history:
Tiny green disc: Recording date autumn 1881
national museum of american history:
Tin box lid: sealed October 1881
national museum of american history:
#HearHistory tweetup on January 26, 2015, in the "Hear My Voice" exhibition
national museum of american history:
#HearHistory tweetup on January 26, 2015, in the "Hear My Voice" exhibition
national museum of american history:
#HearHistory tweetup on January 26, 2015, in the "Hear My Voice" exhibition
national museum of american history:
#HearHistory tweetup on January 26, 2015, in the "Hear My Voice" exhibition
national museum of american history:
#HearHistory tweetup on January 26, 2015, in the "Hear My Voice" exhibition
national museum of american history:
#HearHistory tweetup on January 26, 2015, in the "Hear My Voice" exhibition
national museum of american history:
#HearHistory tweetup on January 26, 2015, in the "Hear My Voice" exhibition
national museum of american history:
#HearHistory tweetup on January 26, 2015, in the "Hear My Voice" exhibition
national museum of american history:
#HearHistory tweetup on January 26, 2015, in the "Hear My Voice" exhibition
national museum of american history:
#HearHistory tweetup on January 26, 2015, in the "Hear My Voice" exhibition
national museum of american history:
#HearHistory tweetup is on, despite sloppy weather!
national museum of american history:
Oh no, what if it snows before #HearHistory?
national museum of american history:
#HearHistory tweetup on January 26, 2015, in the "Hear My Voice" exhibition
national museum of american history:
#HearHistory tweetup on January 26, 2015, in the "Hear My Voice" exhibition
national museum of american history:
#HearHistory tweetup on January 26, 2015, in the "Hear My Voice" exhibition
national museum of american history:
#HearHistory tweetup on January 26, 2015, in the "Hear My Voice" exhibition
national museum of american history:
#HearHistory tweetup on January 26, 2015, in the "Hear My Voice" exhibition
national museum of american history:
#HearHistory tweetup on January 26, 2015, in the "Hear My Voice" exhibition
national museum of american history:
#HearHistory tweetup on January 26, 2015, in the "Hear My Voice" exhibition
national museum of american history:
The spelling list: dorky but useful!
national museum of american history:
#HearHistory tweeters
