https://www.mappingthelives.org/bio/0f7533e2-ae45-4378-a320-b56b18230f83
https://www.alemannia-judaica.de/dreieichenhain_synagoge.htm
https://www.alemannia-judaica.de/dotzheim_juedgeschichte.htm
Gedenkbuch - Memorial book entry (bundesarchiv.de)
Son: Willy Metzler See [CLI Part 25] do_xioLr55cABeZTjfKaYnzS - Dokumente - Talk in the Forum of the Arolsen Archives (arolsen-archives.org)