(This form is to be used for material extracted from ClA—controlled documents.) possible conspiracies have been followed through with negative results), we must become familiar with the details of what both the American and Mexican investi- ame american ang Mexican investi. gatory agencies there have done. This means reading their reports, after trans- lation, if necessary, and in some cases talking with the investigators themselves. oped ete ee ees lo pe ante muerte tenes a i “(Slawson and~Coleman Mamoerandun,” Ap f #37 1964;-Subjz~Aaditional.. dines of — \ Investigation in Mexico ‘Which May Prove’ oo ; - - $i vin sa ls os Wea _ “Worthwhile, a “ity cia (CLO: cork FE A oo chow Hoses at Manéfestty, Coleman's and Slawson's desire s for a ‘thorough investigation v _ by. fee ex sancor aon “Secbye oe j rand whe Le ct ons a | ww posta “the” CIA's concern test . sources and methods, however relevant to the Commission! 's investigation, bemexpesed . ‘Considering the-gravity and. signi- ficance of the Warren Commission's investigation; tye 5 ] Pe - - She neti aA are oe ‘pad caale € Agency' sawitholding of material from the \ Nay have impeded (tS ate, [ty de peach Es Commission staff was SLeaby—ERpEOPEL . Oo Cimr oht(, hasan dh Conctussans meth rec pect “to Oswald's Activities while ta Mexico City. 89 ¥, ith. . Classification: 9903s - Classified by derivation:
wT LF LF a a i ~_ ez nN Classification: ence’! (This form is to be used for material extracted oe ( from ClA—congrplied documents.) On April 8, David Slawson, Howard Willens, and William Coleman flew to Mexico city, Mexico to meet with the representatives of the State Department, FBI, CIA, and the Government of Mexico. uu. | a - SS ((Stawson Memorandum, ‘april 22, 1964, Subj: Trip Sy co mee eer edie ee fo nent nt ee arenas oe ne © Mexico City, p. 1) ri.or-~ arture, ee o~ ighe-s de. dog do ey <a pte ete eee _ they. met. with~ ‘THE Han Fhe U.S. Ambassador’ ‘to. ormaencin Ambassador Mann told the: Warren--Commission-representa- tives thatthe (Cia! SsHessieo~Gley-Station was-aetively -engagad_smephotosumeitiaice-oper _— upon the group’ s arrival in Mexico City, they —_ ? were met by U. S. “ambassador Freeman, Claire Boonstra © of the State Department, Clark? Anderson of the FBI, CC: A in dgres a. Hse | . ee, aa and Winstorscott’ofthe-¢ (Ibid. pp. 9-10)" a =, a That same day, during—a-meeting—between—the- y pa Coin, ; conmisston Gepresentativeg WineSeottyr’ ey wphre Atl Ae Or pardon ws ~ available to the group > actuaiienanseripts of the—Git' s fw week at FE tl wid wid & LAS dP TIAL, oy ea BagLish translations.oft ~— hAS Classification: go059 Classified by derivation:
A ray Wee i “ete c cole oe ha pe oer ‘he proved Pefayt Sais, bs; ith eo foc moterial extractideet ns phetajrants io | for the time period covered by Oswald's visit. ‘Oswald, Duran, and everyone else throughout Mexico (tbid-) ) ‘84855 reveatea that all known Cuban and Russian. ot OTA cool: cuments.) Lia prone tok we a ".. -MineBeETt stated at the beginning _ of his narrative that he intended to make a complete disclosure of all facts, including the sources of his information, and that he understood that all three of us had been cleared for TOP SECRET and ~ that we would not disclose beyond the confines of the Commission and ‘its immediate staff the information we obtain- ed through him witho irst clearing it oF with his superiors“in WasRingtens—Yeo agreed to this." ( (Ibid.J / . he C ig pase) Abs coher Sk tf t & MinemGeott: 4 socks to the Commission Morelos Ax Ce ely sentacives the CIA's course of action 2: = = following the assassination, indicating that his * state immediately began to compile dossiers on _ hom. the CIA knew had had some contact with Oswald i y i intelligence agents had “quickly  beén put under surveillance following the assassination. Slawson concluded : ad, narrative plus the material we were shown disclosed immediately how - incorrect our previous information had - been @n Os jdjys contacts with the Soviet and Mexiea ibassies Apparently the oe Classification: The pelerence 5 Kath ba-+e slated by 00906 0
Classification: (This form is to be used for material extracted disterx tionsomiiledticsadons to which our information had been subjected had entered some place in Washington, because the CIA information that we were shown by ,Scoett was unambiguous on almost all the crucial points. We had. f previously planned to show Scest, Stason 's reconstruction of Oswald's prob ' activities at the embassies to get “scott! s opinion, but once we saw how badly distorted our information was we realized that this would be useless. Therefore, instead, we .decided to take as close notes as possible_ wee WG from the original source materials at some <<. later time during our visit." (Ibid, Pp. 24)* : ern phasis 7; 1964 “hg | the results of the notetaking from original source | ; } / ® A separate Slawson memorandum of Aprit CIA ates cheat ef i materials that he did following Sept disclosures. _ & sense. aw Late § 4 ‘These notes dealt exclusively with the-telephenic intercepts pertaining to the Duran and Oswald -cenver- ia 6é “om the Sov et and Cuban cn in Mexico City. the Commissi#n' s abili ty to draw ac¢ scately 4S regarding/ Oswald’ $s sogourn in fmeant that As of April; 0, 1964, sem td Sy dy i 5ee 000061 Classified by derivation: Classification:
49 &F LF MB ‘ 3A ° section _ Classification: rena seh TH (This form is to be used for material extracted . | from ClA—controlled documents.) | Mewieo-City-—Mystery—Ma 7" sega ar? bs Le ot aah Oba dy MO, ek an considered had? ‘this material been ‘expeditiously provided. investigation, t Commission. ea fre ot PLE SS AL a to glee the factual path by which it had structured Gswald's activities in Mexico City. te further revedled that the Agency had provided amb #guous information to i the Commissfion when, in faét "on almost ail the crucial points" - signific: Intly more orecife materials. could haye been made available for analysis by the Commiss on. (Ibid.) thus, the. Agency ¥s. early policy , IN DID OA G Ot Oe of no providing: thefCommission with Mebiy—rerevant ~ HEF GAS in peo : jethods* haf oc vies derive Strom aemmekn,~ “pee ‘sources and... anaj possibly foréclosed lines of {nvestigation e-S+r cul an involvenert, chat might have been more seriously arch YRS SE, \e, mk y et On November 23, 1963, FBI Special Agent Odum showed Marguerite Oswald a photograph of a man bearing no physical resemblance to her son {Warren Classification: i Classified by deriva AOOOS 2