104-10335-10009 Assassination Records Review Board 600 E Street NW > 2nd Floor - Washington, DC 20530 (202) 724-0088 + Fax: (202) 724-0457 June'l7, 1996 Mr. ohn Pereira . Ditector CIA HAS NO OBJECTION To Historical Review Group | PELE ASSIFICATION AND/OR Center for the Study of Intelligence IN THIS neon CIA INFORMATION Central Intelligence Agency- ‘ CUMENT Washington, D.C. 20505 Re: ARRB Request for Additional Information and Records No. CIA-10 Dear John: Pursuant to its authority under the President John F. Kennedy Assassination Records Collection Act of 1992, the Assassination Records Review Board requests that you provide us with descriptive information regarding the “Interagency Source Register” cited in the attached document. Would you please. explain the principal function of the Interagency Source Register and provide some basic background information, including when it began functioning, the purpose for which was created, which entity or entities in the intelligence community were responsible for operating it, and which entity or entities in the intelligence community made use of it. To the extent that the Register may have been discontinued during the 1958-1965 period, we would like to know why and what type of system replaced it (if any). In addition, would you please identify the documents to which you refer in drafting your response. This request should be interpreted in its broadest reasonable sense. To the extent that you are not certain whether certain information comes under the scope of this request, please let us know and we can advise you whether we seek to include it. Should this request impose an unreasonable burden on you that we may have not anticipated, please advise us so that we can work with you to modify or amend the request accordingly. Boaro Memsers: John R. Tunheim, Chair « Heary F. Graff - Kermit l. Hall « William L. Joyce « Anna K. Nelson
13-00000 Assassination Records Review Board 600 E Street NW - 2nd Floor - Washington, DC 20530 (202) 724-0088 + Fax: (202) 724-0457 June 17, 1996 Mr.John Pereira = --= . CIA HAS NO OBJ Director OBJECTIO Historical Review Group REA SSIF ICATION ANDION - Center for the Study of Intelligence a IN THIS DOCU INFORMATION. ; VUMENT Central Intelligence Agency Washington, D.C. 20505 Re: ARRB Request for Additional Information and Records No. CIA-10 Dear John: Pursuant to its authority under the President John F. Kennedy Assassination Records Collection Act of 1992, the Assassination Records Review Board requests that you — provide us with descriptive information regarding the “Interagency Source Register” cited in the attached document. Would you please explain the principal function of the Interagency Source Register and" ~-- provide some basic background information, including when it began functioning, the purpose for which was created, which-entity or entities in the intelligence community were responsible for operating it, and which entity or entities in the intelligence community made use of it. To the extent that the Register may have been discontinued during the 1958-1965 period, we would like to know why and what type of system replaced it(ifany).- In addition, would you please identify the documents to which you refer in drafting your response. . This request should be interpreted in its broadest reasonable sense. To the extent that you are not certain whether certain information comes under the scope of this request, please let us know and we can advise you whether we seek to include it. Should this request impose an unreasonable burden on you that we may have not anticipated, please advise us so that we can work with you to modify or amend the request accordingly. " c Boaro Memeers: John R. Tunheim, Chair « Henry F. Graff « Kermit L. Hall ¢ William L. Joyce « Anna K. Nelson Executive Direcroa: David G. Marweil
13-00000 Mr. John Pereira June 17, 1996 Page 2 Thank you for your attention to this matter. Sincerely yours, we GYL£ David G. Marwell Executive Director Enclosure
13-00000 ADMINISTRATIVE_>—-EINTERNAL-USE ONLY 21 June 1996 CIA SPECT; AL COF FIRS SO TIONS : hw la § baal rs va -.. RELEASE IN ¢ ULL. / MEMORANDUM FOR: Fred Wickham en 2000 Oe DO Focal Point for . JFK Board Requests / FROM: John F. Pereira ; Chief, Historical Review Group SUBJECT : JFK Board Request No. CIA~10 Interagency Source Register x : ‘ “1. Attached is request No. CIA-10, dated June 17, 1996 from the Assassination Records Review Board. The request is for information regarding the “Interagency Source Register” which is cited in an attached document. 2. Please advise how you would like us to respond to this request. _ John F. Pereira Attachments
13-00000 21 June 1996 CIA SPECIAL COLLECTIONS / X JFK Board Requests.-..-.cu ee f IY A or TAT rer re _.. RELEASE IN FULL / MEMORANDUM FOR: Fred Wickham ~ 2000 : - DO Focal Point for SS FROM: John F. Pereira Chief, Historical Review Group SUBJECT: JFK Board Request No. CIA-10 Interagency Source Register 1. Attached is request No. CIA-10, dated June 17, 1996 from the Assassination Records Review Board. The request is for information regarding the “Interagency Source Register”, which is cited in an attached document. 2. Please advise how you would like us to respond to this request. Suny  ‘Gohn -F. Pereirav ss! > Attachments s eee Lol yee Si fiadabinnane ce ce bet wt rt ee
13-00000 Mr. Barry Harrelson October 7, 1996 Page 2 which will be processed as an assassination record. Gunn will then determine whether there are any additional portions of the history that should be added to the Blakey version. CIA will compile the “Blakey version” as soon as possible and Gunn will promptly thereafter review the documents. Index. CIA has made an index available to Review Board staff and the staff has identified certain histories that may be appropriate for review. CIA will make available those histories that are of obvious relevance, and will raise with Review Board staff any questions regarding the requests where the basis for the request is unclear. CIA will begin to make © histories available on a rolling basis. Review Board has agreed to review histories promptly once they are made available. Although it was not discussed at otir meeting, we would very much appreciate it if you would, within the next two weeks, identify which histories you are prepared to make available and those that CIA believes should be subject to further discussions. Cram’s multi-volume counterintelligence history. Although Cram’s - ’ history was not specifically discussed at our meeting, the Review Board _ staff understands that the history has been located and the Review Board staff awaits its being made available. CIA-8 (Intelligence community staff) CIA will provide a report to the Review Board staff within two weeks. CIA-9 (Publications and analytical materials) The Review Board staff provided CIA with a list of certain publications as they appear in an LBJ Library finding aid. CIA will report back on recommended action to the Review Board promptly. CIA-10 (Interagency source register) CIA has compiled information responsive to the request. CIA will make ag available within two weeks. CIA-11 (Duran’s original statement)
13-00000 Mr. Barry Harrelson October 27, 1996 Page 2 Other Histories. No response has been received to our agreement that CIA identify within two weeks the histories that can be made available and those that should be subject to further discussions. CIA-8 (Intelligence community staff) - CIA had promised to provide a report to the Review Board within two ‘weeks. Nothing has been made available. CIA-9 (Publications and analytical materials) We have received no materials responsive to this request. Additionally, no response has be received from CIA regarding the list of publications that are identified in an LBJ Library finding aid that the Review Board staff provided. CIA-10 (Interagency source register) CIA has not yet made available the records that it had agreed to provide within two weeks. (wes Usweld om CIA-11 (Duran’s original statement) CIA has agreed to make some further attempts to locate Duran’s original ~ statement. CIA-12 (MWAVE materials) CIA has agreed to make materials available on a rolling basis. Informal requests: Spas Rankin. CIA has made the Spas Rankin file available to the Review Board. Review Board staff aren continues. When research is compiete, staff wil discuss issues with s Gan calle ctr pe Weel [we \ IN 23738. CIA is searching for cable number IN 23738 (7 July 1962). ~ Cov 4 son Marilyn Murrett. CIA has made the Marilyn Murrett file available to the Review - ’ Board. Review Board staff research continues. When research is complete, staff
13-00000 mo —_ —CLHRG CONFIDENTIAL 20 February 1997 Mr. T. Jeremy Gunn General Counsel Assassination Records Review Board 600 E Street, NW Washington, D. C. 20530 Re: (U) ARRB Request for Additional Information and Records No. CIA-10 (Interagency Source Register) Dear Jeremy: (U) This is in response to Mr. David Marwell's letter of 17 June 1996 to Mr. John Pereira, in which he asked a number of questions concerning the “Interagency Source Register”; specifically, a. What is the function of the register? b. When did it begin? c. What are the purposes of the register? d. Which entity or entities are responsible for operating the register? e. Which entity or entities in the intelligence community have made use of it? f. To the extent it fell into disuse during the period 1958-1965, what, if any, system replaced it? (C) Please find enclosed for your review DO Instruction 50-46 entitled, “The Interagency Source Register.” This Shree-page instruction fully answers questions a, c,/and above. With Yéspect €o question e, at this time I know o no way of determining exactly which entities within the intelligence community made use of the register. It can be assumed that all such agencies knew about it and used it to gome extent. With respect to b_and f, we will continue to séarch for data which will provide answers./ We request that the enclosure be returned when the Staff completes its deliberations on this issue. CL BY: (11637 Tf CL REASON: ‘I-5S(c DECL ON: AL DRV FROM: PER 10-82 CONFIDENTIAL
13-00000 ~e 4 . _ CONFIDENTIAL (U) If you have any questions in this regard, please call me at 613-1825. ~~ Sincerely, _ Enclosure: As stated CONFIDENTIAL
13-00000 CONFIDENTIAL ‘oe! DCI/CSI/HRG: JBH/GMB/bkh (20 Feb 97) Distribution: -~ Orig - fd bed ph fd fet Adse w/fenc HRG File w/o enc ‘ARRB Request File w/enc DO (Fred Wickham) w/o enc JFK/DO l w/enc Barry w SrIc CONFIDENTIAL
13-00000 . - CONFIDENTIAL . ; fe ¥ -7 (4&4 Central itligence Agency Washington, D.C. 20805 13 August 1998 Ms. Laura Denk, Esquire Executive Director Assassination Records Review Board 600 E Street, N.W. Washington, D.C. 20530 fe | Dear Ms. Denk: Reference: (C) ARRB Request No. CIA-10, for information i on the Interagency Source Register (U) The Following is responsive to referent request. (Cc) “The Interagency Source Register (ISR) is simply a dévicé wheréby-agencies-within the intelligence community which recruit or deal with sources of foreign positive | intelligence outside the United States try to keep from bumping into each other in the pursuit of such information.| It is for the further purpose of ensuring a source cannot gain an unwarranted advantage. by dealing with more than one agency. Each agency is responsible for registering an individual as a source with the ISR before using the individual. | (C) The ISR was established in 1957 by the intelligence Advisory Committee, predecessor to the U.S. Intelligence Board. The ISR was not used extensively during the years 1958-1965 and we know of no system or procedure which took its place. (Cc) The first ISR regulations were in the form of basic procedures each agency was to follow, procedures which have gone through a number of reiterations. ARRB staff members have reviewed the classified, current written instruction— governing the @xistencé and use of the ISR: s a es CL BY: (0611637) ' CL REASON: 1.5(c) DECL: X1 DRV FROM: Per 10-82 CONFIDENTIAL
13-00000 a w a¥ wal Fe ° ~ CONFIDENTIAL Ms. Laura Denk, Esquire (U) I believe that this information is fully responsive to your request on the ISR and accordingly, completes our work on CIA-10. Sincerely, J. Barry Harrelsor a oo ~ mA ! ~ ne 2 CONFIDENTIAL