https://www.mappingthelives.org/bio/6f70acb3-5df8-4cac-969e-37f34d3f5cc7
https://www.alemannia-judaica.de/ulm_synagoge_a.htm
http://www.zeichen-der-erinnerung.org/wp-content/uploads/2023/02/Dept.-03-Izbica-19420426-Namen.xlsx
Klara (Clara) Dreyfus (1877 - 1942) - Genealogy (geni.com)
Clara Dreyfuss, Gänsheidestr. 51 (stolpersteine-stuttgart.de)