Media appendix 16 December 2024 Image for Sophie Rosetha Roos By: Redactie Joods Monument Letter, (inside of the couver) from Sophie Rosetha Roos, dated 26 July 1944, sent from Westerbork barrack 85 to the parents of Boris Otto Roos, Calmer Julius Roos and Grietje Burgij (Bobje).