2919834 Signed letter from William Henry Fox Talbot to James David Forbes, 1839 (pen & ink on paper) by Talbot, William Henry Fox (1800-77); The University of St. Andrews, Scotland, UK; (add.info.: William Henry Fox Talbot (11 February 1800 ??17 September 1877), British scientist, inventor and pioneer of photography. James David Forbes (20 April 1809 ??31 December 1868), Scottish physicist, glaciologist and seismologist.); 穢 University of St. Andrews Library ; English, out of copyright.