John Isaac Hawkins' patent polygraph machine or autopen. Copperplate engraving by Wilson Lowry after a drawing by J. Farey Jr. from Abraham Rees' Cyclopedia or Universal Dictionary of Arts, Sciences and Literature, Longman, Hurst, Rees, Orme and Brown, London, 1810.
John Isaac Hawkins' patent polygraph machine or autopen. Copperplate engraving by Wilson Lowry after a drawing by J. Farey Jr. from Abraham Rees' Cyclopedia or Universal Dictionary of Arts, Sciences and Literature, Longman, Hurst, Rees, Orme and Brown, London, 1810.