Mr. Maes, allow me to reply in English as my Dutch is "een beetje geroest."  I ma indeed the son of Israel Rosengarten. I myself have no information regarding Salomon Zinger neither does my mother - the person who might now is my brother David Rosengarten - who I will ask when I see him next - unfortunately a recent stroke leaves him a bit incapacitated.

I follow the remarkable work you are doing in reconstituting the memory and allow me to express my gratitude and admiration. My contacts are as follows if I can ever be helpful: steve.rosengarten@gmail.com / +33616870887 as I am not as present on messenger as I should be. Kind regards. Steve Rosengarten