In addition, a Jokos file (number 12598) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.
Their son Maurits Aron van Tijn departed to the Dutch Indies on 8th August 1939 as soldier of the KNIL.
On 25th June 1944 he died as prisoner of war on board of the Tamahoko Mary near Nagasaki.