Professor Gray's Telephone in New York and Philadelphia...
Item # 206543
April 28, 1877
SCIENTIFIC AMERICAN, April 28, 1877, from New York.
This
issue contains the following prints,
articles, and/or ads: Watson's Gap Lathe; The Ironclad Man-of-War Alexandra; Professor Gray's Telephone; and
other articles. See
photos for details.
Category: Post-Civil War
