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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