Cryptonym: LNYUMA
https://www.archives.gov/files/iwg/declassified-records/rg-263-cia-records/second-release-lexicon.pdf
CIA document: Research Aid: Cryptonyms and Terms in Declassified CIA Files Nazi War Crimes and Japanese Imperial Government Records Disclosure Acts: Page 39: ..."Term: LNYUMA. Definition: US Immigration and Naturalization Service (INS)..."
104-10215-10096: FILE ON ROSS L. CROZIER.
11/25/66: Cable to Director: REF DIRECTOR 5368: "1. Debriefing Juan A. Ortega Herrera and Julian Perez Parrado as well as interview with captain of ship 'Chiricano' which picked up escapees established bona fides. Low key exploitation of escape stories arranged thru AMHIM (the Agencia de Informaciones Periodisticas - the Agency for News Information) facilities. 2. AMLASH-1 (Rolando Cubela Secades) reported by escapees to be working as prisoner-medical assistant on Isle of Pines. Some Americans in prison but names resulting from debriefing will be reported by separate cable. 3. Escapees made available to QKFLOWAGE (United States Information Agency/USIA) and LNYUMA 25 November. LNYUMA hopes to use evidence obtained from Perez Parrado against Osmani Nodarse, alleged CUIS agent resident JMWAVE area."
104-10161-10380: CABLE: INQUIRING ABOUT RETURN OF AMMUG-1'S ALIEN REGISTRATION CARD.
05/24/68: Cable from Director to JMWAVE (Orig: F. F. Bucci, WH/Security): REF: UFGS-10530: "LNYUMA inquiring about return of AMMUG-1's (Vladimir Lahera Rodriguez) alien registration card. Please advise." Releasing Officer: (REDACTION) William V. Broe, C/WHD. Coordinating Officers: (REDACTION) WH/COG. (Signature), OS/AAS. Authenticating Officer: Frederick F. Bucci, C/WH/SEC.
104-10163-10130: CIA FILE ON MANUEL ARTIME BUESA.
04/08/69: Cable to Director (Nebecker Acting): "1. Appreciate ref comments. Will advise LNYUMA informally that WOFIRM (CIA) has no operational interest in Manuel Artime and leave decisions concerning possible investigation of his business activities to LNYUMA discretion. 2. File 201-267437."