"Correspondence regarding an information request by Wischnia on German concentration camps in Estonia and especially Estonian war criminals, Ralf Gerrets and Jaan Viik."@en . "14 letters"@en . . "WL3000/9/1/1558" . . "B. Wischnia was a Holocaust survivor of Jewish-Baltic descent."@en . . . . . . . "Correspondence with Wischnia, B."@en . . . "This material has been digitised. Readers should book a reading room terminal to access it."@en . .