primary-yellow:DIE FARBE COVER, A5 CATALOGUE FOR THE ZURICH KUNSTGEWERBEMUSEUM- BY MAX BILL, 1944.
primary-yellow: DIE FARBE COVER, A5 CATALOGUE FOR THE ZURICH KUNSTGEWERBEMUSEUM- BY MAX BILL, 1944. source: SWISS GRAPHIC DESIGN: THE ORIGINS AND GROWTH OF AN INTERNATIONAL STYLE, 1920-1965 (Laurence King Publishing Ltd, 2006). -- source link