From Newspaper Het Parool, in an article about an upcoming exhibition on by the nazi's looted art. A collaboration of the Jewish Cultural Quarter in Amsterdam and the Rijksmuseum:"Graphic artist Samuel Jessurun de Mesquita (1868-1944) made a portrait of his 17-year-old son Jaap in 1922. The family was deported from their home in 1944. The couple was deported to Auschwitz, where they were murdered. Jaap died in Theresienstadt. The woodcut is on display at the Rijksmuseum.His former student M.C. Escher was horrified when he found the studio on the Linnaeuskade [in Amsterdam mp] turned upside down. The graphic work lay in indescribable disorder across the floor. In 5 minutes I picked up as much as I could carry. The next day I returned to try to save more, but it was too late - there was a removal van outside, the house was being emptied by order of the Germans. This collection will remain in my possession until someone in the family who is entitled to it is found," Escher wrote on a bill on 10 July 1945."https://www.parool.nl/amsterdam/grote-tentoonstelling-over-joodse-roofkunst-en-de-impact-op-nazaten-het-gaat-ook-om-erkenning-van-het-leed~b9f66eab/