CIA document: Research Aid: Cryptonyms and Terms in Declassified CIA Files Nazi War Crimes and Japanese Imperial Government Records Disclosure Acts: Pages 21-22: ..."Term: CAVATA. Definition: LfV, which were the (West German) Field Offices of the BfV (Office for the Protection of the Constitution, Internal Security Service). CAVATA-16: Cryptonym for Hubert Schruebbers. CAVATA-17: Cryptonym for Erich Wenger as Liaison contact at BfV..." As stated in the description for LfV, the Internal Security Service was the West German equivalent of the FBI.
10/03/58: Document Transfer and Cross Reference: Subject: Opl/MKTOPAZ/CAVATA/CAVATA Visit to MKTOPAZ: "Pertinent Information: Re CAVATA visit to MKTOPAZ (CIA Technical Services Division), (REDACTION) suggested to CAVATA-17 (Erich Wenger) that maximum benefits would derive from prior visit to CAVATA of one or more KUBARK (CIA) specialists in technical field who could discuss with CAVATA their principal interests and then prepare an agenda for CAVATA's visit to MKTOPAZ. C-17 agreed and said MKTOPAZ reps welcome at any time..."
02/01/63: Cable from Frankfurt to Director: Slugline HARVARD LCIMPROVE CAVATA TECHS WIROGUE: REF: EGNA 25083: "1. SUBJ ref is HARVARD agent disposal case WIROGUE (David Tzitzichvili) registered Camp King where he processed 28 Aug 62 for political recognition in order legalize him for resettlement. 2. Case discussed with Mr. John Willms who will visit Bonn 5 Feb and will take matter up directly with Chief, CAVATA telling him this AIS case and ask him not pursue. 3. Please advise priority if you desire Willms check in with you prior his visit CAVATA."
02/02/63: Cable from Bonn to Director: Slugline HARVARD LCIMPROVE CAVATA TECHS WIROGUE: REF FRAN 6399 (IN 60224): "1. Since this is apparently a KUBARK (CIA) case and original query came from CAVATA to KUBARK element OCA, fail understand need for transmitting reply to CAVATA via 513th rep. Also do not feel it necessary contact CAVATA chief in response routine working level CAVATA query. This may be attempt on Willms part to find excuse visit CAVATA chief. 2. If this routine CABEZONE case feel stage I debriefing and assessment which normally passed CAVATA will satisfy latter's needs. On other hand if KUBARK has continuing operational interest as paragraph 2 implies we can inform CAVATA accordingly through normal channels. 3. Please advise. C/S Comment: *FRAN asked Bonn advise if desires Willms check in with Bonn prior visit CAVATA."
11/27/64: Cable from Frankfurt: Slugline CABEZONE HARVARD WIROGUE: "1. Wish point out since neither CATIDE (BND) nor CAVATA aware SUBJ refs' true background or past KUBARK (CIA) connections, revelation this to them by NIGALES could prove embarrassing and possibly harm MKTOPAZ (CIA Technical Services Division) ODIBEX (U.S. Army) channel for obtaining political recognitions from FEDREP. 2. In view above request BRUS, in event approached, advise FRAN prior answering NIGALES so that coordinated reply may be formulated."
03/10/66: Cable from Bonn to Frankfurt (Info: Director): Slugline CABEZONE HARVARD WIROGUE: "CAVATA reports WIROGUE (David Tzitzichvili) lost his job 25 Jan 66 either for loafing or carelessness. He and his employer agreed on the separation. His present employment is unknown to CAVATA."
04/07/66: Document Transfer and Cross Reference: Subject or Document: CATIDE CABEZONE WIROGUE...Pertinent Information: REF: MUNI-5728 (IN 91195): "1. Re ref WIROGUE former CABEZONE disposal case. CAVATA previously informed our interest in subject however background never passed to Germans. 2. Defer FRAN response to CATIDE (BND). Recomment we admit former interest in subject but advise CATIDE we have no current interest in him and recomment they keep him at arms length."
11/26/68: Dispatch from COS, Germany to Chief, EUR Division: Subject: Meeting with CAVISTA/16: "Attached please find a self-explanatory Memorandum for the Record describing a luncheon with CAVISTA/16 (Hubert Schruebbers). Since (REDACTION) participated, we would appreciate its being shown to him for any comments he may wish to make. (REDACTION)."