 The drawing now sits with the Jefferson Papers in the Library of Congress.In April 1805, Mr. Peale wrote his friend, Dr. William Thornton to request a certified copy of a patent of a physiognotrace that was issued to John J. Hawkins.Peale, who had an interest in the instrument and who kept the original in his museum, "needed the certified copy to bring suit against a person who was making the device without authority.