In 1935, Kyodo Print Co. Ltd. published a statistical atlas of the city of Tokyo. The collection of illustrated documents exploring Tokyo City was a forerunner in its use of Isotype. This new visual language was used to convey complicated information to the reader by translating it graphically.
Lajos I. Illyefalvi was a Hungarian statistician who produced numerous graphic and statistical works, illustrating various subjects.
Otto Neurath was an Austrian philosopher, sociologist and political economist. He is mainly known to be the inventor of the Isotype, a system of pictograms. He created this method in order to organize, analyze and graphically represent complex data and statistics to visually educate the population.