If you are interested in the Swiss influence on graphic design worldwide, this is the book you should buy to get a good overview of the history of Swiss graphic design. Published in 2014 by Lars Müller, it features texts by a number of authors with a design layed out by the talented people of Norm.
The book is illustrated with plenty of images of posters, layouts, or fonts, commented over 384 pages, showing how Swiss designers have set new standars for graphic design.
Find the book on Amazon.