Vindication of claims to certain inventions and improvements in the graphic art
By: by Asa Spencer.
Contributors: YA Pamphlet Collection (Library of Congress)
Publisher: s.n.
Published: 1843
Place of publication: [New Haven, Conn
Language: eng
Number of pages: 12
Subjects: Gobrecht, Christian F., 1785-1844.; Engraving machines -- United States.; Engraving (metal-work) -- United States.
Notes: "Appendix to the American journal of science and arts, vol. XLIV, no. 1"--P. 1.
The American journal of science and arts, vol. xliv was published in New Haven, April 1843.