On 21 February 1943 Jacob Mossel sent the De Wit family a telegram from the Hollandsche Schouwburg requesting that they send luggage. On 4 May 1943 Jacob Mossel wrote Mrs. De Wit a letter from Vught concentration camp. The telegram and the letter remain.
Jewish Historical Museum, Documents collectio…
In addition, a Jokos file (number 51099) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.