Photography formed the bedrock for future postcards. A large number of cards from the early 1900s took their images from or were influenced by previously printed photos. Many photos from that time have become iconic items. Amongst the great photographers are the resonant names of Disdéri, Silvy, Mayall, Frères, Downey, Nadar, Sarony. Elliott & Fry, Margaret Cameron, Sutcliffe, Bourne & Shepherd, GW Wilson and other great individuals. In the field of postcards are the other household names, James Valentine, Francis Frith, and the Levy Brothers of Paris.