https://www.mappingthelives.org/bio/c4ad1bc4-d080-4f57-bdb1-f5c1bbbd9428
https://ressources.memorialdelashoah.org/notice.php?q=identifiant_origine:(FRMEMSH0408707133174)
see p15
Took the name Joseph Spring after WWII
His story: Wollheim Memorial (wollheim-memorial.de)
Joseph Spring returns to Switzerland - SWI swissinfo.ch
Book reopens dark chapter in Swiss history - SWI swissinfo.ch
https://www.recherche.bar.admin.ch/recherche/#/fr/archive/unite/473909
