calli eee Arlen Sioa . cr da Use Rade fab Classification: ws or’ S* “and Willediatermnisetoobe age ee eee | ; from ClA—ceontrolled documents.) surveillance materials until April 9, 1964. On that date, Coleman, Slawson and Willens met with. 0 ert Aig Kt a WareScott, —khe crats)ehiebor f-SESEIGH™in Mexico City, who provided them with varieus—erunscripts- i CTE We and_transtattons derived from CIA ee _ ofthe Cuban n_and_Seviet-Embassy/Consutates . pnciet RORE TAL ONEE NT eo SARC ot tec, caeeccerer mencmAcrae or. Memorandum of April 22, 1964, Subject: Trip to Mexico: City p22) cierte-April 9,it appears doubtful that the Commission had been given ewe Se! access to thd! xeferencet material. Nevertheless, by March ‘ 12, (1964, the record indicates that fhe Warren Commission had at least become aware Gat the CIAL , Q O- eid-maintad ‘telephanic-survéiliance-of the-éube ’ Coe NB “bebeasy/UaRaiLate, “TS1aHsSi iexovandum, “March@i2, y 4964, Subj: meeting with CIA representatives) . ; erecta Fame ser staan nr Slawson's memorandum of March 12 reveals’ that. the Warren Commission had learned that the CIA possessed fede jaf we of a Ce C0 nw Eve Ey Resaeal scripts~of-conversations between the Cuban Ambassador . \h a4 GN ot to Mexico, ‘Armas, and the Cuban President Dortico The asad - Dorticos-Armas conversations, requested by the = [ CIA 's sBaceeg2 ‘ re ; tA: ak de : et "Classification, ee ae ; 4 Sin oo Non ines dca ERTS Co rn TER O00bS! Stake “hk is Pe & LO. gagse © aire e wis Cc assified by derivation: - wa te PACs oa a? Plo bar ey F Po
aT a MT LT ae SECR a ET, Classification: (This form is to be used for material extracted : SGTION anf ee from ClA—controlled documepitg Maadit a RELEASE OF THIS DOCUME Commission representatives at TAGS TI 5 with CIA officials, including Richard Helms,. concerned Silvia Duran's arrest and interrogation by the ee Fan tha sci pe ATE grass wad ei! ae Mexican Federal Police, /(Slawson Memorandufi ° a NTE I EE IOP nos ec April 22, 1964, pp. 3, 19, 45-46)s"Welms” “Fespondea to the Commission's request for access, stating that he would attempt to arrange for the Warren Commission! 's 3 representatives to review this mater iain 3 Bacalterreenc (Slawson Memorandum of March 12, 1964, 6)r »y as Rk MU EAD et Oem? SOS LESTER RUM a EY a TO NN ip Co ee Another Slawson memorandum, dated March 25, © 1964 concerned Oswald's trip to Mexico. In that memo Slawson wrote that the tentative conclusions he had reached concerning Oswald's Mexico trip, ‘ _.were derived from CIA memoranda of January 31, 1964 . ag % ang February 19, 1s6ay" ~(sTawson ‘Memorandum of are 25, 1964, D. 20) find, “in addition, a Mexican federal police Summary “of interrogations eg, Shor ———"a ee 4 thy ° ‘ Free wow - “to Slawson wrote: ib A large part of it (the summary report) is simply a summation of what the Mexican police learned when they interrogated Mrs. Silvia.Duran, an employee of the Cuban Consulate in Mexico City, and is there- jf - fore only as accurate as = a testimony to the police. ass read Classification: WV rs 2 | ae, .
ye AT yf Ly LF LF SF ‘ - 31 - wa | age gs SéCREL Classification: se (This form is to be used for material extracted : . H from ClA-—controlled documents.) These comments indicate that Slawson placed qualified reliance upon the Mexican police summary. Moreover, there is no indication that Slawson had — ; et Le of infer ay de F natipeedle veer tiered PO Uf been provided the Baran t. Snie—aw Tala Bed 1 Coren. obteined hy. We aed f sertpts. In fact, by virtue of Slawson's comments peng pn concerning the Mexican police report, it would _ CHA oo. Lor appear that the Warren Commission, as of March 25, avd) ? had been provided-little substantive information mcridle pertaining to Silvia Duran. As Slawson reveals, | : the Commission had been forced to rely upon the two fens Pee. memoranda that did not make reference to the susveil- Ons eae Nad lanee-operations; y and a summary report issued by the Mexican Federal Police. Thus, the Agency | had 2 . for over three months: .< exposing soko. Sj - pearete) Pep Ath SOR perc | ae teah | akan’: Ay . ad the~surveittancenoperations tc thefreview of the 5 concerned Warren Commission staff members. 3 was Ss gle stated in the CIA cable of December 20, 196f to its Mexico City Station: ~~ So Oo 5 Our present plan in passing information Ener to the Warren Commission is to eliminate eo soc nention of;tes erephore ia: in order to protect your centdmaad as Will (or Pape te log, ‘| rely instead on statements of Silvia Duran and on contents = Soul file which Soviets gaye (CIA Doc. FOIA #420-75 "30, 196a7S~ SER dddpe DIR 90466 nce eho a ad SH ake Dept Classification: =  ¢ Classified by dena O9OS2
3 a . SECRET Classification: (This form is to be used for material extracted \ he wing from ClA—controlled documents.) The Committee's belief that Slawson had a plut Jckephertorrdeceegh * not been given access to the Duran{ transcripts an oy, bre ee further Supported by reference to his memorandum | gene of March 27, 1964 (@S859 wherein he states his conclusion that Oswald had visited the Cuban a) Ff foe aa lenit TWO Boeck. (ohublg « \ Sateen Embassy orf three occasions. W(ibid, p-2y this NS - again . i conclusion, he wrote, was based upon an analysis of Silvia. Duran's testimony before the Mexican police. This memorandum bears no indication that he had Aba Lars, protien! we he ptcel ¥ Lg fot. “E - Furthermore, reviewed any had: Sla Kote £ ssgy-Sonee to thes transcripts, ce ainly heir stibstance would fave been _iticorporated in wn into wt angifais a ingly noted for this-* y ~ pufpose. “His analysi would hav¢: “reflected/ fhe fact “ | of” his review aithor by. its éorroboratid hn or . of i, . ‘. a Pol criticism of” the above cited Mexican golice summary report. | Memo {. 2 of a 1964, Subj: intercepts | putt + ax ado Fsentenct Ps <! rom Soviet and Cuban Embassies in Mexico, a Classification: os Classified by derivation:
Classification: __ SECRET ‘Silvia Duran, § stated that? an American, a. fhe Cuban E f  Gocroter Had this’ informatior‘been mdde availab as Oswald was at his calculati ns of Oswalg's activiftles in: Mexico City would pave been more firmly established than pe lected sn aS meme fandunn they were as*of March-27, 1964. § The record supports the Committee's finding that.as of April 2, 1964 the Warren Commission had ¢€ - Ee still not been given access to the above-ref rence ed ie “Ot. by rah sour dbricle. alent RITE TAEC Cn isteadl series of telephonie~imtereept Ss. -“ memorandum of that date by Coleman and Slawson, - . posed one . question to the CIA and made two. requests for information Megat antmrnn te TS Mai te Seiten ba Ea HOR Mtn ag, eres REE as, ee ‘te from the Agency,’ “(Slawson - = ‘Coleman Memoran im April 2, 1964, Subj: Questions Raised by the vmacssat> wate: - ideenineiiderimetene . Soran sare ame an SRF Me Jcoteman and Slawson wrote: | ae J ann File)< SR. , Tis e 1) What is the information source referred to in the November 28 telegram that wn Prd % ve) Kad eae | Classification: ~"~""*_ 009033 Classified by derivation: