https://www.joodsmonument.nl/nl/page/198372/max-isaac-prins
https://www.mappingthelives.org/bio/988a9324-49f4-4ce8-a5c1-5ca7a5cb53c9
http://www.jodeninnederland.nl/id/P-2173
https://albumacademicum.uva.nl/cgi/b/bib/bib-idx?c=ap;lang=en;type=boolean;date61=1907;date62=1907;searchtype=phd;q1=id*;rgn1=id;cc=ap;view=reslist;sort=achternaam;fmt=long;page=reslist;size=1;start=33