Pseudonym: Dahlgren, Harold E.
At page 43 of the original version of this document, it appears that the original requests were numbered on this original sheet, and then transferred onto three by five cards. Item #76 reads "Harold E. Dahlgren". This page is not found in later versions of this document!
Notebook used by the CIA to provide the HSCA with responses to requests to solve pseudonyms and cryptonyms - item #76 reads "Oliver N. Aimack".
CIA Western Hemisphere Division officer who dealt with some matters related to George de Mohrenschildt in Haiti
10/12/66: Report Cover Sheet from JMWAVE: Reporting Officer: Oliver D. Cimoch, Henry J. Sloman. Reports Officer: Eleanor D. Pimsler. Approving Officer: Philip G. Elmard. Source Crypt: UOAMBER-6. SUPPLEMENTAL DATA: Slugline DYVOUR JMPALM PBRUMEN: "SOURCE: Paras 1 - 5: UOAMBER-6, who obtained the information in para. 1 from Francisco (Cuco) Avila, Cuban émigré identified by Source as a friend of his and Rolando Masferrer's. He got paras. 2-4 from Masferrer, and para. 5 from Eugene L. Maximilien. Paras. 6-8: AMOT source Raul Arango de la Noval, from Olea..."
01/10/68: Dispatch from COS, Mexico City to Chief, WH Division (Info: Chief, WH/COG): Subject: PBRUMEN/LIONION/Operational Progress Report - 1 October through 31 December 1967: ..."2. Operational Developments: A. Introduction of new Case Officer: On 11 December 1967, Matthew Dingley introduced Oliver D. Cimoch to LIONION-1 as the new Case Officer for this operation. All previous communication plans were continued pending Cimoch's familiarization with Mexico City - an offer readily accepted by LIONION-1..."
01/26/68: Dispatch from COS, JMWAVE to Chief, WH Division: Page 5 (Page 2 of Damage Report): "WOFIRM Personnel Exposed: ...Oliver D. Cimock/Ralph..."
04/16/68: Dispatch from COS, Mexico City to Chief, WOACRE (Info: Chief, WH Division): Subject: AQUATIC/LIRING-3 - LIROSIN Deactivation of Audio Installation: ..."3. At about 1300 hours, 15 April 1968, Walter W. Cornbury and Oliver D. Cimoch entered the LP and were greeted by LIROSIN who knew we were coming but did not know why. A check of the audio device revealed that LIRING-4 and a young (teenage) male relative were in the target...Another telephone call to target with no answer, and Cornbury entered the target apartment using keys provided by Rowton. The wall plate was removed, the AC lines to the SPT-2A clipped off close to the plug, the SPT-2A easily removed, the wall plate refastened, and the target apartment vacated. Total time about two minutes. Cornbury and Cimoch left the area immediately. There were no security problems noted at any time..."
04/25/69: Dispatch from COS, Mexico City to Chief, WH Division: Subject: Operational/LIONION/LIONION Project Renewal for FY 1970: "LIONION Project Renewal...B. Changes: Oliver D. Cimoch assumed administrative and operational responsibility for Project LIONION in December 1967 and continued this responsibility until his departure in December 1968. Pending arrival of Cimoch's replacement, the Project was handled by Station Officer Gerald D. Fahlanger and Station WOACRE representative, Walter W. Cornbury. On 28 February 1969, LIONION-1 was introduced to Andrew E. Pellement, who assumed Project responsibility effective that date..."