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JFK Research Center

A research reading room for records related to the assassination of President John F. Kennedy, drawn from the U.S. National Archives Catalog.

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Records sourced from the U.S. National Archives Catalog, ABBYY JFK-OCR, and allowlisted primary-source reports. Transcriptions and OCR are machine-generated and may contain errors.

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Scope: This research tool indexes 37,141 records - a curated subset of the ~300,000 documents in the JFK Assassination Records Collection. Releases indexed: 2017-2018, 2021, 2022, 2023, 2025. 2,165 records have full-text OCR indexed - of those, 2,162 are sourced from the 2025 re-release (NARA has not yet published an XLSX manifest for 2025; each document’s prior-release history is shown on its page). Releases not yet indexed: 2026. Methodology

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Results for OFFICE MEMORANDUM: HIDALGO, BALMES NIEVES, JR.

Results2Current document, mention, or semantic mode Entities32People, agencies, places, and concepts Topics11Curated subject lanes TimelineChronology routes for this query QuestionsOpen-question routes

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CIA 2

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1958 1

CIA|March 6, 1958|PAPER - TEXTUAL DOCUMENT|NAID 104-10120-10163

SourceCIATextMetadata onlyRecordNAID 104-10120-10163

OFFICE MEMORANDUM: HIDALGO, BALMES NIEVES, JR. - #65077-DL.

CIA · From: FILES · To: DC/ CLEARANCE BRANCH · JFK43 : F4 : 1997.08.09.10:50:20:483102 : · Release: In Part

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CIA / PAPER - TEXTUAL DOCUMENT

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Entity name appears in the title

High confidenceCurated metadataCIAPaper - Textual DocumentRelease 2017-2018

CIA|PAPER - TEXTUAL DOCUMENT|NAID 104-10120-10165

SourceCIATextMetadata onlyRecordNAID 104-10120-10165

OFFICE MEMORANDUM: HIDALGO, BALMES NIEVES, JR.

1 AGENCY: CIA 104-10120-10165 RECORD NUMBER : RECORD SERIES : JFK AGENCY FILE NUMBER 80T01357A : JFK ASSASSINATION SYSTEM IDENTIFICATION FORM AGENCY INFORMATION DOCUMENT INFORMATION AGENCY ORIGINATOR : CIA FROM: W.A. OSBORNE TO: AC/PERSONNEL SECURITY DIVISION