Sander Lipschits and Grietje Grootkerk had six children: Levi Meijer, Rebecca (Bep), Maurits (Maup), Jacob (Jaap) and two children who survived the war.
I. Lipschits, Onbestelbaar. Herinneringen in briefvorm (The Hague 1992)
In addition, a Jokos file (number 10718) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.