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Other Massachusetts photographers followed suit with J. Daniels of Boston obtaining a patent for a ferrotype card mount on August 9, 1864. c.1819) is mentioned as patenting a mount in 1863although I have been unable to locate the patent. Potter of New York patented his picture card frame on March 7, 1865 and it is his patented card mount which is most commonly encountered amongst those with any patent markings printed on them.