Alexander Toncman stayed in July-August 1942 in the prison of 's-Hertogenbosch. From there he was deported to camp Amersfoort.
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For a biographical note see: H.E. Dominicus, Mauthausen. Een gedenkboek (2e herziene en uitgebreide druk; Amsterdam 1999) 158-159.
In addition, a Jokos file (number 52139) 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 bank (L-claim, number 11928/12482).