For the coding of prisoners, see IBM and the Holocaust by Edwin Black, pp 355 and 362. Black references the "Administration of German Concentration Camps", 9 July 1945, PRO FO 371/46979 (Public Record Office, London), as well as "Decoding Key for Concentration Camp Card Index Files", n.d. NARG242/338 T-1021 Roll 5, JAG (National Archives, College Park); and in the last source Frame 99 is mentioned.
The telegram is evidence number PS-3363 from the Oswald Pohl case at the Nuremberg Trials. A translation of the text is available at yadvashem.org.
