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Cryptonym: LIENVOY

Definition:
CIA telephone tapping program in Mexico City, targeting Cuban and Soviet embassies and run in conjunction with the Mexican DFS. Netted phone calls allegedy of Oswald. See also LIFEAT.
Status:
Documented
Sources:

Inside the Company p. 613:

"Joint telephone-tapping operation between Mexico City station and Mexican security service."

Philip Agee, Inside the Company, pp. 353-354:

technicians and LP operators...have an uncomfortable situation with the heat. Those tube-operated Revere recorders give off so much heat that the room is stifling in the summer." Although Agee was discussing Ecuador, the same equipment was used by LIENVOY. https://leaksource.files.wordpress.com/2014/08/inside-the-company-cia-diary-philip-agee.pdf Also see generally Bill Simpich, State Secret, Chapter 4.

104-10414-10124: MEXICO CITY STATION HISTORY, EXCERPTS

"In August 1958 the US Ambassador, Robert C. Hill, entertained Carlos Trouyet (owner of the Mexican telephone company and Mexico's richest industrialist) at a breakfast where Winston M. Scott, COS, was invited. Scott was introduced as an "expert on Communism". Trouyet, an extremely pro-US Mexican, offered him assistance in collecting information on Communist activities...there were ten Mexican employees working in the listening post who prepared the daily transcripts and a summary of information from the lines that were not fully transcribed. This summary was delivered each morning about 0800 to the station case officer by AREHART. Any items of unusual significance were brought to the attention of the chief of station before 0900 hours."

104-10413-10047: CUBAN EMBASSY ACTIVITIES

1/23/62 dispatch between COS Win Scott to C/WH J.C. King: Scott implictly admits that the transcript sent to LITEMPO-2 is fake. Refers to it as a "transcript" and that "it was felt it had to be supplied" because the Ambassador made a statement about the Cuban ambassador personally paying students. "No tape exists for this, and REDACTED will be told that it has been erased if he requests it."

104-10187-10030: (ASSET) OPERATIONS (VOL. VI).

6/15/62: Arnold Arehart/Charles Flick, the LIENVOY chief, recounts how he was surveilled near "the LP", describing what appears to be the LIENVOY listening post (LP) as near the corner of Tonela and Chihuahua in Mexico City. Another version is slightly more legible: https://www.archives.gov/files/research/jfk/releases/2018/104-10187-10030.pdf

104-10098-10230: MONTHLY OPERATIONAL REPORT FOR PROJECT LIENVOY

"...the monthly operational report for Project LIENVOY activities during October 1963...Mexi-6453 reported a contact by an English-speaking man with the Soviet Embassy in Mexico City. This was forwarded to Headquarters for further dissemination."

104-10127-10137: DEPT OF JUSTICE IS PREPARING REPORT ON WHOLE ASSASSINATION CASE AND WILL UNDOUBTEDLY WANT TO INCLUDE DETAILED DATA ON OSWALD'S ACTIVITIES IN MEXICO

11/27/63 cable DIR 85245 from HQ to Mexico City: "Pls note that Director (FBI) is getting from (FBI) MEXI (illegible) info that obviously originates from the LIENVOY operation. (Illegible) more apparently does not realize that this info was produced by a (CIA) operation, and indeed, (FBI) may be getting this LIENVOY info through its own clandestine sources in the Gobernacion office or even in the President's office. Please try to clarify with the (FBI) rep there the exact manner in which he has obtained such info and the form in which he has sent it to (FBI). We must avoid the inadvertent compromise of LIENVOY. Advise. End." Marginalia by Scott states that an answer was sent to whole cable, with copies to "liaison to (FBI)" and "LIENVOY/OPNS" (?)

104-10195-10082: TRANSCRIPTS OF TELTAP: LIENVOY

12/3/63 - Lienvoy transcripts - "index Kihss". Reference to journalist Peter Kihss of the New York Times.

104-10439-10003: DISPATCH: GPFLOOR/TRANSMITTAL OF LIENVOY TAPE

6/18/65, cable MEXI 3832 from COS Mexico City to C/WH: GPFLOOR-related tape transmitted.

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