Westminster Abbey. Artist: Nicolaas Henneman (Dutch, Heemskerk 1813-1898 London). Date: before May 1845.Talbot's negative-positive photographic process, first made public in 1839, would change the dissemination of knowledge as had no other invention since movable type. To demonstrate the paper photograph's potential for widespread distribution--its chief advantage over the contemporaneous French daguerreotype--Talbot produced The Pencil of Nature, the first commercially published book illustrated with photographs. With extraordinary prescience, Talbot's images and brief texts proposed a wide array of applications for the medium, including portraiture, reproduction of paintings, sculptures, and manuscripts, travel views, visual inventories, scientific records, and essays in art.Despite the revolutionary nature of Talbot's undertaking, or perhaps because of it, The Pencil of Nature was not a commercial success. Today fewer than forty substantially complete copies--many quite faded--are e