https://www.mappingthelives.org/bio/03d53697-4637-40e6-9ec6-27bde71d4b02
https://www.ushmm.org/online/hsv/person_view.php?PersonId=1497721
HHStAW Fonds 518 No 46895 - Calm, Frieda - Arcinsys detail page (hessen.de)