Sara Engelsman was a daughter of Mozes Engelsman and Judith Waterman.
Stadsarchief Amsterdam, archiefkaart Sara Engelsman
The archive of the Stichting Sieraden-Comité contains a request for a statement of the right to inheritance for Sara Troeder-Engelsman.
NIOD, Archief Stichting Sieraden-Comité, toegangsnummer 197j, dossiernr. 0044A-MV