Catalogue Page from Exhibition Catalogue: 1911 Fifty-sixth Annual Exhibition of the Royal Photographic Society of Great Britain

showing (E11A069) Exhibit no. [974]: The new 1911 Adon Telephoto Lenses cover plates from 3½ x 3½ to 15 x 12, and give magnifications of 2, 3, 4, 6, 10 and more diameters by J. H. Dallmeyer, Ltd. ()