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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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Documents Mentions Semantic3 results

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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FBI18,005CIA15,955HSCA1,226Department of Defense315NSA299SSCIA258Senate (Church Committee)253Senate236Department of State79NARA47JCS45U.S. Marine Corps45Department of Justice33U.S. Secret Service32ROCKCOM24WC24ARMY24DOS17LBJ14KISS/SCOW11MATHENY7INSCOM6OSD4BUCHEN/DAN4DUVAL78-673CAR/HARDY3BUCHEN78662DAVIS2CHENEY2

1950 – 2004

19502004

Document matches | 3

Results for LANZ, MARCOS DIAZ

Results3Current document, mention, or semantic mode Entities32People, agencies, places, and concepts Topics11Curated subject lanes Media0Official JFK Library records TimelineChronology routes for this query QuestionsOpen-question routes

Visible OCR

1/3

High confidence

Top agencies

CIA 3

Dense years

1978 1

CIA|OFFICE PAPER, ROUTING SHEET, PHONE MESSAGES|NAID 104-10113-10383

SourceCIATextMetadata onlyRecordNAID 104-10113-10383

OFFICE MEMO:HANDWRITTEN/LANZ, MARCOS DIAZ

… : 80T01357A DOCUMENT INFORMATION AGENCY ORIGINATOR: CIA FROM: CHIEF, ALIEN AFFAIRS STAFF TO: FILE TITLE: OFFICE MEMO:HANDWRITTEN/LANZ, MARCOS DIAZ DATE: 07/21/1959 PAGES: 2 SUBJECTS: DIAZ LANZ, M DOCUMENT TYPE : OFFICE CLASSIFICATION RESTRICTIONS CURRENT STATUS: : UNCLASSIFIE …

Matched by

Title, metadata, or description text

Record type

CIA / OFFICE PAPER, ROUTING SHEET, PHONE MESSAGES

Confidence

Entity name appears in the title

High confidenceCurated metadataCIAOffice Paper, Routing Sheet, Phone MessagesRelease 2021

CIA|PAPER - TEXTUAL DOCUMENT|NAID 104-10112-10008

SourceCIATextMetadata onlyRecordNAID 104-10112-10008

LANZ, MARCOS DIAZ

… : JFK AGENCY FILE NUMBER: 80T01357A DOCUMENT INFORMATION AGENCY ORIGINATOR : CIA FROM: CHIEF, ALIEN AFFAIRS STAFF TO: FILE TITLE: LANZ, MARCOS DIAZ DATE : 07/21/1959 PAGES: 2 SUBJECTS: LANZ, MARCOS DI DOCUMENT TYPE : PAPER CLASSIFICATION: UNCLASSIFIED RESTRICTIONS : 1A CURRENT …

Matched by

Title, metadata, or description text

Record type

CIA / PAPER - TEXTUAL DOCUMENT

Confidence

Entity name appears in the title

High confidenceCurated metadataCIAPaper - Textual DocumentRelease 2021

CIA|March 6, 1978|PAPER - TEXTUAL DOCUMENT|NAID 104-10062-10005

SourceCIATextOCR availableRecordNAID 104-10062-10005

MISCELLANEOUS NAME AND FILE LISTS.

… 069/1 15 Mar 78 11., LOVELADY, Billy Nolan 78-1057 8 Mar .78 12. LYNCH, Grayson 78-1069/1 15 Mar 78' 78-1179/1 22 Mar 78 13. LANZ, Marcos Diaz 78-1179/1 22 Mar 78 14. LUCE, Claire Booth 78-1179/1 22 Mar 78 15. LESNICK , Max 78-1179/1 22 Mar 78 16. LANUSA, Jose Anton …

Matched by

Title, metadata, or description text

OCR status

Full text is available for close reading

Record type

CIA / PAPER - TEXTUAL DOCUMENT

Low confidenceOCR textOCRCIAPaper - Textual DocumentRelease 2025