104-10331-10085 ESG 95-02 14 July 1995 -- MEMORANDUM FOR: Chief, Historical Review Group FROM: Fredrick C. Wickham, Jr. DO, Focal Point for ARRB SUBJECT: _ Position on Release of Information Pertaining to Mexico City Station and the JFK Assassination Records 1. At its monthly meeting on 17 July the ARRB will be _ addressing the issue of the Mexico City Station and its operation in light of any deletions made by the Agency to protect sources and methods. The issues of greatest concern are those surrounding {he joint/ teltap operations run by the Agency Mexican Service , official acknowledgment of which could have an impact ison and foreign: rela - We therefore, wish to maintain protection of this information. . 2. We are willing to release information which indicates the existence of operational teltaps against the Soviet and Cuban Embassies fas long as they appear unilateral and we can continue {Ee protect the existence of any participation of the Mexican ¢ vices We are willing to release documents which indicate the existence of Mexico City Station during times outside the window which we have acknowledged when they contribute significantly to the historical record. These steps will be useful to the historic record and reveal the extent of coverage. employed against these targets. We would want to continue protection of the information which identifies coverage of other countries and individuals other than Lee Harvey Oswald. 3. We also agree to release of the following: A. Pseudonyms of employees, aliases of employees, and file numbers. e cL By (524343 ‘9 DECL OADR . DRV COV 2-87 SECRET
13-00000 \ SECRET - SUBJECT: Position on Release of Information Pertaining to Mexico City Station and the JFK Assassination Records B. Cryptonyms, such as those in the LI series ' unless they appear in the context offliaison j operational equities {(such as LITENSOR and LITEMPO) . " C. . We need to continue the protection: of the cryptonym ' LIENVOY. This cryptonym is used extensively throughout the collect to describe \the » joint activity from — different perspectives. “Individual occurrences may not seem to reveal anything significant but, when looking at the cryptonym_in context over the entire collection it reveals(Cthe joint ‘activity |which we - are trying to protect. ———™ el 4. Regarding the revelation of names of employees who retired under cover, we request the Board to table its final determination until the individuals have been contacted and informed that their name is being considered for release. This will allow the individual to consider the impact it will have and convey relevant information. The Directorate database is not set up to track individuals who were involved in specific operations. We need the assistance of the employees to know their operational involvement’s. Office of Central Cover has prepared and is coordinating a letter to be sent to the employees which will both inform them and solicit their assistance/comments. Fredrick Cc. Wickham, dr. ? : SECRET
13-00000 SUBJECT: Position on Release of Information Pertaining to Mexico City Station and the JFK Assassination Records __C/IMS/ESG/F. ‘Distribution: Orig &é1- 1 1: 1 Wickham/44448/13 July 95 Addressee DO/TRO ESG/HCS C/ESG “SECRET 3 SECRET