Otto Treumann (1919-2001) is regarded as a major pioneer in the modernization of graphic design in the Netherlands. Premised on Swiss typography and the Bauhaus, Treumann's oeuvre is distinguished by an easy-to-read combination of visual elements and an iconoclastic treatment of colour. These benefit from his wide knowledge of printing techniques acquired during the Second World War when he forged documents for the resistance. He enjoyed a special relationship with industrial clients, invariably achieving top quality and innovation in the arena where economics meets culture. His work has proved eminently suitable for house styles and logos, including those for Wolters Noordhoff the publishers, the Kr ller-M ller Museum, the Royal Institute of Dutch Architects and El Al Airlines. He also designed posters for the Industries Fair in Utrecht, the Rotterdam Ahoy' and Tattoo in Delft.