Theo Matejko: Professor Auguste Piccards Tauchkugel
<bdi><a href="https://en.wikipedia.org/wiki/en:Theo_Matejko" class="extiw" title="w:en:Theo Matejko"><span title="Austrian painter and illustrator (1893-1946)">Theo Matejko</span></a>
</bdi>
1937
Das Matejko Buch