https://collections.arolsen-archives.org/de/archive/6-3-3
https://collections.arolsen-archives.org/de/archive/6-3-3-2_06030302-0-874-504
https://yvng.yadvashem.org/index.html?language=en&s_id=14936753&s_lastName=&s_firstName=&s_place=&s_dateOfBirth=&cluster=true
http://digital-library.cdec.it/cdec-web/persone/detail/person-2328/driller-siegfried.html
https://www.ancestry.de/discoveryui-content/view/756:60840?tid=&pid=&queryId=f65ca394c6b3e830d6a2d143d7205db7&_phsrc=DUM4&_phstart=successSource