Het boek van PTT, published in 1938 and designed by Piet Zwart, was commissioned by the Netherlands’ state-owned national postal service PTT. The 48-page book explains to children how the postal service and telephony worked. Zwart wanted to stimulate children’s spirit of discovery, and introduced two protagonists in the book: De Post (‘Mr Post’) and J. Zelf (‘Your Self’). The book’s design turns long educational texts into attractive elements on the page. The content is almost literally brought to life by the two puppets, which are photographed in combination with other objects and illustrations. The reader is enticed to become part of this world, by sending a letter.
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