(1914–70) Swiss typographer who studied in Zurich and taught at the Schule für Gestaltung Basel, where he became a prominent educator and highly influential representative of the new Swiss Typography.
- Schmid, Helmut. ‘Ruder typography Ruder philosophy’ in: Idea, issue 333, 2009/3, p. 14
- Friedl, Friedrich, Nicolaus Ott, and Bernard Stein. Typography: an Encyclopedic Survey of Type Design and Techniques throughout History. New York: Black Dog & Leventhal, 1998, pp. 457–458
- Amstutz, Walter. WHO’S Who in Graphic Art. Zürich: Amstutz & Herdeg Graphis, 1962, p. 463