Unpublished letter, 'An account of the process employed in photogenic drawing' from Henry Fox Talbot to Samuel Hunter Christie 'In compliance with the request of several scientific friends who have been much interested with the account of the art of photogenic drawing,' Talbot shares further explanations relating to his paper 'Some account of photogenic drawing or, the process of which natural objects may be made to delineate themselves, without the aid of the artist's pencil' [see AP/23/19]. Annotations in ink throughout. Subject: Photography / Photomechanical processes Received and read 21 February 1839. Communicated by Christie. 20 February 1839