Keywords: Gustav Adolf Tobler - ETH BIB Portr 01255 (Johannes Meiner).jpg depicted people Gustav Adolf Tobler depicted place 1909 Technique photo bw paper cardboard Hochformat Size cm 9 6 Institution ETH-Bibliothek Bildarchiv object history exhibition history credit line Prof Dr A Tobler bottom accession number Portr_01255 http //doi org/10 3932/ethz-a-000045528 e-pics Bildarchiv online ETH Bibliothek PD-old-auto-1996 1941 CH Gustav Adolf Tobler Photographs by Johannes Meiner Bildarchiv der ETH-Bibliothek Zürich 20th-century black and white portrait photographs of men at bust length Black and white portrait photographs of male scientists |