Sara Dooseman was de 2e echtgenote van Salomon Dooseman. Zijn eerste echtgenote, Emilie Mahler, overleed in december 1921. Willem en Martin waren niet haar kinderen, maar haar stiefkinderen.
In addition, a Jokos file (number 3629) 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 :
- securities or bonds. (W-claim, number C158/446)
- valuables surrendered to the Lippmann-Rosenthal looting bank (L-claim, number 2682/8343)