The arrest of Hugo Daniel Hes and his family is mentioned in A. van Liempt, Kopgeld. Nederlandse premiejagers op zoek naar joden, 1943 (Amsterdam 2002) 196.
In addition, a Jokos file (number 53142) 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 5131/10425).