After an apprenticeship at Walter Diggelman, in 1936, he opened his Zurich studio specialising in graphic design, exhibition design and photography. From 1951 he produced concert posters for the Tonhalle in Zurich and in 1966 he was appointed European design consultant to IBM.
Josef published several books, including ‘The Graphic Artist and His Problems’ and ‘Grid Systems in Graphic Design.’
I love how he uses limited colour in lots of his pieces such as ‘Radfahrer-Achtung Achtung-Radfahrer’ where the road is yellow and the car, bicycle and person are greyscale. Its eye catching, not overpowered by colour.

http://www.designishistory.com/images/brockmann/beethoven.jpg
https://rhodrievans.files.wordpress.com/2009/01/de-film.jpg
