
From Ruud Janssen I received many great pieces of mail art. Due to lack of time I am much behind in posting, but I'll try to do so, step by step (animals on this blog, other themes on the IUOMA site).
So here some add-and-passes, I received in March already.
By the way, Mail Art Cows you also can find at the IUOMA Mail-Art Cow group.

This add-and-pass (above: front side, below back side) originated by Jon Foster.

Here is Ruud's typical art, showing asemic writing:

And the well-known painted envelope:

Thank you very much, Ruud!