Exhibition catalogue published in conjunction with show held at Photographischen Sammlung / SK Stiftung Kultur im MediaPark, Köln, Germany, May 23 - December 21, 1997. Texts by Susanne Lange, Gabriele Conrath-Scholl, Anne Ganteführer, Virginia Heckert. Documents works by: August Sander, Karl Blossfeldt, Albert Renger-Patzsch, Bernd & Hilla Becher. Includes biographies and bibliographies, checklist. Texts in English and German.