Letter from Wilhelm Krell from the Jewish Community of Vienna (Austria) to Simon Wiesenthal, forwarding the photocopy of an anonymous letter and photograph of Michl Trinkl (b. 1915), former guard in the Mauthausen and Sachsenhausen camps, dated 15 March, 1951
On the topic mentioned in the correspondence, see also:
“Mauthausen” (VWI-SWA, I.1); “Sachsenhausen” (VWI-SWA, I.1 ), and “Ried im Innkreis ” (VWI-SWA, I.1 )