Assaying gold and silver...
SCIENTIFIC AMERICAN, New York, February 15, 1902 This issue contains the following prints, articles, and/or ads: Assaying Gold and Silver Bullion at the New York Assay Office; Mail Transportation in Cities;The Improvement of Washington; The Yerkes Observatory Two-Foot Reflector; A Pigeon Ranch; and other articles and advertisements.
The issue is complete in 16 pages and is in good condition. See photos for full details.
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