The International System Of TYpographic Picture Education (Isotype) was developed by the Viennese social scientist and philosopher Otto Neurath (1882-1945) as a method for visual statistics. Gerd Arntz was the designer tasked with making Isotype’s pictograms and visual signs. Eventually, Arntz designed around 4000 such signs, which symbolized keydata from industry, demographics, politics and economy. Neurath and Arntz made extensive collections of visual statistics in this manner, and their system became a world-wide emulated example of what we now term: infographics.
For more info vist the Gerd Arntz Web Archive here.