Sara Koopman worked as a cutter with the lingerie- and ready-made clothing company SIDVA (Simon de Vries Ateliers) in Amsterdam in October 1941.
She then had been in office for two years.
Lijst van Joodsch Personeel-SIDVA Oct. '41
In addition, a Jokos file (number 4956) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.The Jokos file reveals that a claim was lodged for compensation for valuables surrendered to the Lippmann-Rosenthal looting b…