https://www.mappingthelives.org/bio/5099b321-7cce-4796-839f-6e73d28d94ee
https://www.myheritage.com/research/record-10789-495342/anna-federbusch-born-thummler-in-jewish-holocaust-memorials-jewish-residents-of-germany?tr_id=m_no7m0elyhw_egcdfo8uyu