The Unphotographable explores this parallel tradition, and is published to coincide with an exhibition of the same name at Fraenkel Gallery in San Francisco, presenting photographs by anonymous amateurs alongside those of artists such as Diane Arbus, Bruce Conner, Liz Deschenes, Adam Fuss, Man Ray, Christian Marclay, Ralph Eugene Meatyard, Alfred Stieglitz and Hiroshi Sugimoto.