George Rosenkranz’s teacher and mentor, Leopold Ruzicka, lecturing at ETH Zurich, 1911.
Unknown photographer, Portr-15226, ETH-Bibliothek Zürich, Bildarchiv
George Rosenkranz’s teacher and mentor, Leopold Ruzicka, lecturing at ETH Zurich, 1911.
Unknown photographer, Portr-15226, ETH-Bibliothek Zürich, Bildarchiv