Born in Switzerland 1896, died Zurich 1982

01 Bergcristall / Rauchquarz
 
02 Parasol / Lepiota procera
 
03 Heupferd / locusta viridissima
 
04 Russische Fahne / Callimorpha hera
 
05 Ringelnatter / Natrix natrix
 
06 Ammonshorn / Ammonites biplex
 
 

Published by Rotapfel-Verlag Erlenbach/ Zurich 1943 each page 2cms x 35cms.