Harry is een zoon van Benjamin Soester (A'dam, 21 januari 1891) en Mina Hekster (A'dam, 19 juni 1895).
Bron SAA archiefkaart Benjamin Soester 21-1-1891
In addition, a Jokos file (number 30677) 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 …