Declassified U.S. and Cuban UFO Archives Explained

Introduction

Cuba does not possess a single publicly accessible national UFO archive comparable to the United States Air Force’s Project Blue Book files. Instead, the archival trail is fragmented across declassified U.S. military and intelligence documents, scattered Cuban newspaper references, private ufology collections, and later digital preservation projects. That fragmented record is precisely what makes the Cuban UFO archive interesting: it reveals how Cold War intelligence systems, military reporting habits, and local amateur researchers each documented unusual aerial claims in very different ways.

The strongest documentary evidence is not proof of extraterrestrial craft. It is evidence that sightings were formally recorded, circulated, translated, catalogued and sometimes investigated by official institutions. The most reliable material therefore tends to be administrative rather than sensational: Navy correspondence, Project Blue Book case listings, intelligence memoranda, archive finding aids, and Cuban research compilations. Read together, those sources show that Cuba occupied a small but persistent place inside wider Cold War UFO reporting networks. [National Archives]cdn.nationalarchives.gov.ukUFO FILESThis book is largely based upon the real-life accounts of UFO experiences recorded in files collected by Britain's Ministry of D… [NSA]nsa.govNSAUnidentified Flying Objects and Air Force Project Blue Bookby UF Sheet · Cited by 3 — With the termination of Project Blue Book, the A…

How Cuban UFO material entered official U.S. archives

The United States monitored Cuba intensely after the 1959 revolution, especially around Guantánamo Bay, Caribbean naval routes and Soviet-linked military activity. In that environment, unusual aerial observations near Cuban territory could enter multiple bureaucratic systems at once: naval logs, Air Force intelligence channels, embassy reporting, or Project Blue Book investigations.

Project Blue Book itself operated between 1952 and 1969 under the U.S. Air Force. Its stated goals were to determine whether UFOs represented a national-security threat and whether the reports revealed advanced technology. The Air Force later stated that of 12,618 reports examined, 701 remained officially “unidentified”, although the programme concluded there was no evidence of extraterrestrial vehicles. [Air Force]archive.orgBrad Sparks Comprehensive Catalog of 1,600 Project Blue Book UFO UnknownsAir Force…Read more… [NSA]nsa.govNSAUnidentified Flying Objects and Air Force Project Blue Bookby UF Sheet · Cited by 3 — With the termination of Project Blue Book, the A…

For Cuba-related sightings, this matters because many modern retellings exaggerate what “unidentified” meant. In archival practice, the label usually reflected incomplete data rather than confirmation of something extraordinary. Blue Book files often contained sparse witness descriptions, uncertain timings, contradictory testimony or missing corroboration.

The Cuban material that survives in U.S. archives generally falls into four categories:

These records are valuable historically because they preserve the reporting chain itself, allowing researchers to compare what was originally documented against later mythology.

The 1958 Guantánamo and USS Franklin D. Roosevelt material

One of the best documented Cuba-connected archival cases concerns accounts linked to the aircraft carrier USS Franklin D. Roosevelt near Guantánamo Bay in 1958. Unlike many later retellings, the importance of this case lies less in the sighting claim than in the existence of a traceable archival collection.

The East Carolina University archive preserving the papers of Chester C. Grusinski states that he served aboard the carrier between 1958 and 1960 and later assembled correspondence, interviews, drawings and witness statements concerning a UFO reportedly seen near Guantánamo Bay. The archive also notes that some witnesses supported the account while others disputed or denied aspects of it. That contradiction is significant because it shows the collection preserved disagreement rather than presenting a unified narrative.

The Grusinski papers illustrate how many Cold War UFO records actually survived: not as official Air Force conclusions, but as privately accumulated documentary trails built by veterans and civilian researchers after the original events. The archive contains interviews, sketches and exchanges with government agencies rather than a formal military determination that an anomalous craft was present.

This distinction matters because later UFO literature often compresses several separate layers into one story:

Archival analysis separates those layers rather than treating them as equivalent evidence.

The case also reflects the strategic sensitivity of Cuban waters during the late 1950s. Military personnel stationed around Guantánamo Bay operated in an environment already saturated with surveillance concerns, radar activity and heightened alertness. That context increased both the likelihood of reporting unusual aerial phenomena and the difficulty of identifying them conclusively.

Cuba inside Project Blue Book records

Contrary to some popular claims, Cuba was not a major focus of Project Blue Book. Surviving records suggest only a modest number of direct Cuba-linked entries. Yet the existing references are useful because they show how Caribbean reports were processed administratively inside the broader U.S. UFO investigation system.

Blue Book documentation generally handled Cuba-related incidents in the same way as other foreign or offshore sightings:

The National Archives confirms that the complete Blue Book collection was declassified and transferred for public access after the programme ended in 1969. [National Archives]cdn.nationalarchives.gov.ukUFO FILESThis book is largely based upon the real-life accounts of UFO experiences recorded in files collected by Britain's Ministry of D…

Several characteristics distinguish the Cuba-connected files:

Maritime settings dominated the reports

Many sightings occurred over sea lanes, naval operating zones or coastal areas. This complicated visual identification because observers often lacked stable reference points, especially at night. Reflections, atmospheric distortions and distant aircraft lights could appear unusual over open water.

Reports were usually brief

Compared with famous U.S. domestic cases, Caribbean files often contain less detail. Some consist only of short summaries transmitted through military channels. This creates a major reliability problem for modern interpretation because later retellings sometimes add details absent from the original paperwork.

Intelligence caution shaped the records

Cold War military reporting systems prioritised potential security implications. Even when observers described something unusual, investigators typically focused first on whether the object could represent foreign aircraft, missile activity or misidentified military operations rather than extraterrestrial hypotheses.

The CIA’s broader historical review of UFO investigations confirms that intelligence agencies treated UFO reporting primarily as an analytical and security problem during the early Cold War period. [sgp.fas.org]sgp.fas.orgCharles P. Cabell ordered a new UFO project in 1952. Project BLUE BOOK became the major Air Force effort to study the UFO phenomenon thro…

What the CIA archive actually shows about Cuba

CIA references connected to Cuban UFO material are often misunderstood online. Publicly accessible CIA reading-room documents do not reveal a secret Cuban extraterrestrial programme. Instead, they show the agency monitoring UFO organisations, foreign reporting trends and public reactions during the Cold War.

Some declassified CIA material references civilian UFO groups and Air Force liaison activity connected to Blue Book-era investigations. [CIA]cia.govCIATHE NATIONAL INVESTIGATIONS COMMITTEE ON…Blue Book UFO investigation, prepared analyses of UFO data for AF, liaison officer between… These documents are historically important because they demonstrate how intelligence agencies tracked the social and informational effects of UFO reports, especially during periods of geopolitical tension.

For Cuba specifically, three archival realities stand out:

This distinction is essential when evaluating sensational claims that “the CIA confirmed UFOs in Cuba”. The surviving records show bureaucratic attention, not extraordinary validation.

Cuban ufology archives and the problem of preservation

The most substantial Cuban-side archival effort came not from the state but from amateur researchers and ufology associations. Much of this material survived only because enthusiasts digitised or mirrored it before older web platforms disappeared.

A particularly important source was the “Ovnis Cubanos” project associated with researcher Orestes Girbau Collado and collaborators. Archived versions of the site preserved case summaries, witness interviews, organisational notices and attempts to formalise Cuban ufology networks. [inexplicata.blogspot.com]inexplicata.blogspot.comThe Cuba FilesAn Interview with Orestes Girbau12 Jan 2013 — We shall discuss not only the latest developments in the subject of UFOs, but also in their… [inexplicata.blogspot.com]inexplicata.blogspot.com1956 ufos over cuba1956: UFOs Over Cuba26 May 2025 — From the files of Cuban UFO researcher Orestes Girbau. Cuba, 1956. José Marrero, a Cuban national, pilo…Published: May 2025

These archives are useful for historians because they preserve local reporting traditions that would otherwise have vanished. They also reveal how Cuban researchers framed the subject differently from U.S. military investigators.

Several recurring features appear in the Cuban archives:

Yet the archives also expose the weaknesses of the Cuban documentary record. Many original newspaper reports are difficult to verify independently. Dates occasionally shift between retellings. Some cases survive only through second-hand summaries written decades later.

That does not make the archives worthless. It simply changes how they should be read. Their strongest value is as documentation of Cuban UFO culture and reporting practices rather than conclusive evidence of anomalous technology.

Why censorship claims remain difficult to prove

Some Cuban ufology writers have argued that Fidel Castro’s government suppressed UFO information for decades. Archived interviews and later commentary by researchers such as Orestes Girbau include claims that official discussion of UFO incidents was restricted or discouraged. [inexplicata.blogspot.com]inexplicata.blogspot.comJanuary 201629 Jan 2016 — Humanoids in Cuba…

There are plausible reasons why reporting unusual aerial events in Cold War Cuba may have been politically sensitive:

However, direct archival proof of a coordinated state UFO censorship programme remains limited. The evidence currently available is mostly anecdotal or retrospective. Researchers therefore face a common problem in UFO historiography: distinguishing between genuine state secrecy and the ordinary archival gaps created by poor record preservation, political upheaval and weak media infrastructure.

In practical terms, the Cuban archive is incomplete because:

• local newspapers were inconsistently preserved,
• official military records are largely inaccessible,
• many amateur collections disappeared,
• and internet-era preservation arrived late.

The resulting vacuum encouraged speculation, especially after the internet amplified older stories detached from their original documentary context.

What survives today in accessible archives

Researchers investigating Cuban UFO records today rely on a patchwork of accessible repositories rather than a single authoritative archive.

The most useful publicly accessible sources include:

• The U.S. National Archives Blue Book collections. National Archives [archives.gov]archives.govNational Archives Project BLUE BOOKThe project closed in 1969 and we have no…Read more…
• Air Force and NSA fact sheets describing official UFO policy and statistics. [NSA]nsa.govNSAUnidentified Flying Objects and Air Force Project Blue Bookby UF Sheet · Cited by 3 — With the termination of Project Blue Book, the A…
• CIA Reading Room material related to UFO investigations and intelligence monitoring. [CIA]cia.govCIATHE NATIONAL INVESTIGATIONS COMMITTEE ON…Blue Book UFO investigation, prepared analyses of UFO data for AF, liaison officer between…
• University archival collections preserving veteran correspondence and witness material linked to Cuba-connected sightings.
• Preserved Cuban ufology websites and translated interviews. [inexplicata.blogspot.com]inexplicata.blogspot.comIt has been learnedCuba: Fidel Castro's Government Censored UFO Information28 Nov 2016 — The recent death of Cuban leader Fidel Castro opens new doors to an… [inexplicata.blogspot.com]inexplicata.blogspot.comThe Cuba FilesAn Interview with Orestes Girbau12 Jan 2013 — We shall discuss not only the latest developments in the subject of UFOs, but also in their…

The National Archives has also expanded online access to UAP-related photographs and bulk digital downloads in recent years, making cross-referencing easier than during earlier decades of UFO research. [National Archives]cdn.nationalarchives.gov.ukUFO FILESThis book is largely based upon the real-life accounts of UFO experiences recorded in files collected by Britain's Ministry of D…

The central lesson of the Cuban archive

The archival history of Cuban UFO reporting is ultimately more revealing about Cold War information systems than about extraterrestrial visitation. The surviving records show how governments, militaries, intelligence agencies and civilian enthusiasts all documented unexplained aerial reports differently.

The strongest conclusions supported by the evidence are relatively narrow:

• unusual sightings were genuinely reported around Cuba,
• some entered official U.S. archival systems,
• Cuban researchers built independent investigative networks,
• and many records remain incomplete, fragmented or poorly preserved.

What the archives do not provide is decisive physical evidence of alien craft operating over Cuba. Most cases remain unresolved because the documentation is thin, contradictory or retrospective. Yet the records still matter historically because they preserve the intersection of Cold War anxiety, Caribbean military geography and local UFO culture in documentary form.

Amazon book picks

Further Reading

Books and field guides related to Declassified U.S. and Cuban UFO Archives Explained. Use these as the next step if you want deeper reading beyond the article.

Book

The Hynek UFO Report

By J. Allen Hynek

Directly connects to declassified investigations, official records and Blue Book material discussed on the page.

See on Amazon

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The UFO Experience

By Joseph Allen Hynek

Explores case evaluation, evidence and official reporting systems relevant to archive-based UFO research.

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UFOs

By Leslie Kean

Focuses on documented governmental and military reporting traditions similar to the archival themes here.

See on Amazon

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Passport to Magonia

By Jacques Vallee

Provides broader context for international UFO records and interpretations surrounding archive collections.

See on Amazon

Browse more on Amazon: The Hynek UFO Report The UFO Experience UFOs

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Endnotes

1. Source: archives.gov
   Title: National Archives Project BLUE BOOK
   Link: https://www.archives.gov/research/military/air-force/ufos
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   The project closed in 1969 and we have no...Read more...

2. Source: nsa.gov
   Link: https://www.nsa.gov/portals/75/documents/news-features/declassified-documents/ufo/usaf_fact_sheet_95_03.pdf
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   NSAUnidentified Flying Objects and Air Force Project Blue Bookby UF Sheet · Cited by 3 — With the termination of Project Blue Book, the A...

3. Source: sgp.fas.org
   Link: https://sgp.fas.org/library/ciaufo.html
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   Charles P. Cabell ordered a new UFO project in 1952. Project BLUE BOOK became the major Air Force effort to study the UFO phenomenon thro...

4. Source: archives.gov
   Link: https://www.archives.gov/research/catalog/catalog-bulk-downloads/uap-bulk-download
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   National ArchivesBulk Downloads for Records Related to Unidentified...Digitized and born-digital records related to Unidentified Anomalo...

5. Source: cia.gov
   Link: https://www.cia.gov/readingroom/document/cia-rdp81r00560r000100010001-0
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   CIATHE NATIONAL INVESTIGATIONS COMMITTEE ON...Blue Book UFO investigation, prepared analyses of UFO data for AF, liaison officer between...

6. Source: inexplicata.blogspot.com
   Title: The Cuba Files
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   An Interview with Orestes Girbau12 Jan 2013 — We shall discuss not only the latest developments in the subject of UFOs, but also in their...

7. Source: inexplicata.blogspot.com
   Title: 1956 ufos over cuba
   Link: https://inexplicata.blogspot.com/2025/05/1956-ufos-over-cuba.html
   Source snippet

   1956: UFOs Over Cuba26 May 2025 — From the files of Cuban UFO researcher Orestes Girbau. Cuba, 1956. José Marrero, a Cuban national, pilo...

   Published: May 2025

8. Source: inexplicata.blogspot.com
   Link: https://inexplicata.blogspot.com/2016/01/?m=0
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   January 201629 Jan 2016 — Humanoids in Cuba...

9. Source: inexplicata.blogspot.com
   Title: It has been learned
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   Cuba: Fidel Castro's Government Censored UFO Information28 Nov 2016 — The recent death of Cuban leader Fidel Castro opens new doors to an...

10. Source: archives.gov
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    The page is organized by record group, with links to...Read more...

11. Source: archive.org
    Title: Brad Sparks Comprehensive Catalog of 1,600 Project Blue Book UFO Unknowns
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    Air Force...Read more...

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13. Source: youtube.com
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14. Source: af.mil
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15. Source: nuforc.org
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    NUFORC UFO Sighting 142643UFO and alien sighting in the Azores. I'm 86 retired. One of the things on... From 1947 to 1969, a total of 12...

16. Source: Wikipedia
    Title: Project Blue Book
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    Project Blue BookThousands of UFO reports were collected, analyzed, and filed. As a result of the Condon Report, which concluded that...

17. Source: cdn.nationalarchives.gov.uk
    Link: https://cdn.nationalarchives.gov.uk/documents/the-ufo-files-extract.pdf
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    UFO FILESThis book is largely based upon the real-life accounts of UFO experiences recorded in files collected by Britain's Ministry of D...

18. Source: nationalarchives.gov.uk
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    Title: Project Blue Book (UFO)
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    Blue Book (UFO)Project Blue Book Originally Project Blue Book was the Air Force name for a project that investigated UFO reports between...

20. Source: youtube.com
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    Direttore ACU CubaL' intervento di Orestes Girbau Collado all' annuale Simposio sugli Oggetti Volanti non Identificati (OVNI) di San Mari...

21. Source: britannica.com
    Title: Project Blue Book
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    Definition, History, Aliens, UFOs, & Facts16 May 2026 — Project Blue Book, code name for the United States' longest-running Air Force pro...

    Published: May 2026

Additional References

1. Source: archivesfoundation.org
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   50 Years Ago: Government Stops Investigating UFOsTo mark the 50th anniversary of the end of Project Blue Book, the National Archives will...

2. Source: esd.whs.mil
   Link: https://www.esd.whs.mil/Portals/54/Documents/FOID/Reading%20Room/UFOsandUAPs/proj_b1.pdf?ver=2017-05-22-113513-837
   Source snippet

   Blue BookIn the course of accomplishing these objectives, Project Blue Book strives to identify and explain all UFO sightings reported to...

3. Source: reddit.com
   Link: https://www.reddit.com/r/UFOs/comments/s8ayco/guarico_venezuela_ufo_allegedly_photographed_from/

4. Source: sofrep.com
   Title: the truth behind ufos from project blue book to the pentagons uap task force
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   The Truth Behind UFOs: From Project Blue Book to the...8 Feb 2026 — Project Blue Book had two main goals: to determine whether UFOs posed...

5. Source: reddit.com
   Link: https://www.reddit.com/r/Paranormal/comments/1cudrwt/purple_light_in_sky_over_terceira_island_azores/
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   I think i found a ufo sighting “proof”... r/UFOs - 1959 Photograph – Project Blue Book. 4. 3.4K.Read more...

6. Source: mauinow.com
   Title: 1956 maui ufo sighting documented in air force files
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   1956 Maui UFO Sighting Report Included in Air Force Files11 Feb 2015 — A 1956 UFO report from Maui is included in now unclassified docume...

7. Source: reddit.com
   Title: in 1950 wellknown architectural photographer
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   In 1950, well-known architectural photographer Irving...FBI VAULT UFO PART 04: Old news paper from 1917, when did we start seeing UFOs i...

8. Source: reddit.com
   Link: https://www.reddit.com/r/AskHistorians/comments/ytg7hi/was_project_blue_book_keeping_track_of_ufo/
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   What cases/encounters would you like to see? r/aliens -...Read more...

9. Source: facebook.com
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   portes sobre fenómenos aéreos no identificados (UAP), conocidos...

10. Source: upload.wikimedia.org
    Title: Project Blue Book, BBA PBSR10 300
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    Project Blue Book ArchiveProject Blue Book has a contract with a civilian research organization which serves the project with an IBM anal...