Early photography.- Fox Talbot (William Henry) Some account of the Art of Photogenic Drawing [&] An Account of the Processes Employed in Photogenic Drawing, In a Letter to Samuel H. Christie, in The London & Edinburgh Philosophical Magazine and Journal of Science, vol. XIV, January to June 1839, pp.196-211, 5 plates, of which one folding, including 3 chromolithographed, occasional offsetting (not affecting the Fox Talbot), occasional spotting, antique style half calf, gilt, spine in compartments and with red and black leather labels, [cf. H. & A. Gernsheim, The History of Photography (New York: 1969), chapter 7; Beaumont Newhall, Latent Image. The Discovery of Photography (Albuquerque: 1967), p.17; and Norman 2049], 8vo, London & Edinburgh, Richard & John E. Taylor, 1839.

⁂ One of the earliest publications to detail Talbot's early experiments in photography. There is an exceedingly rare separate printing of February of the same year. He proposes a fundamental principle of modern photography in the use of a fixed negative image as the master to be used to produce a theoretically unlimited number of positive copies.