Holocaust Survivors and Victims Database – Benjamin Targownik (ushmm.org)
https://collections.arolsen-archives.org/en/search/person/69428502?s=Benjamin%20Targownik&t=2743493&p=1
https://collections.arolsen-archives.org/en/search/person/69428503?s=Benjamin%20Targownik&t=2743493&p=1
Central DB of Shoah Victims’ Names - Record Details (yadvashem.org) not stated