door Anton van der Valk (1884 – 1975) has illustrated under his pseudonym Ton van Tast several brochures issued by P.T.T. Among them the booklets both titled “Hoe help ik de post en mijzelf” (How do I help the post and myself). With numerous illustrations the public was instructed how to handle with different types of mail.
Issued by “Het hoofdbestuur der P.T.T.” (the postal direction), these examples are from 1930 and 1938:
