On 13 September 1944, 52 toddlers of the Westerbork orphanage were transported to Bergen-Belsen. Because their identity was not known, they were registered in the camp records as 'Gruppe Unbekannte Kinder' (Unknown Children).
All but one they survived Bergen-Belsen and Theresienstadt and in the summer of 1945 they returned to the Netherlands. Because of their age they were unable to reconstruct the things they had been through. As a result nobody paid any attention to their experiences.