An earlier Venona document, #1579, had actually mentioned "HISS" by name. This partially decrypted cable consists of fragments of a 1943 message from the GRU chief in New York to headquarters in Moscow and reads: "from the State Department by name of HISS" (with "HISS" "spelled out in the Latin alphabet", according to a footnote by the cryptanalysts). "HISS" could refer either to Alger or Donald Hiss, both State Department officials at that time. Lowenthal argued that had Alger Hiss really been a spy, the GRU would not have mentioned his real name in a coded transmission, since this was contrary to their usual practice.