Three groups, and not one physical description among them.
THINK ABOUTIT’S ALIEN TYPE SUMMARY
Philadelphia/Montauk Project Aliens
Preston Nichols’ own book, The Montauk Project: Experiments in Time, names not one alien group but at least three: “the Sirians,” who reportedly helped design the Montauk chair; a separate group “from the Orion constellation,” who reportedly provided a related antenna design; and an unnamed group encountered directly, underground, by Duncan Cameron and Edward (Al Bielek), who held the two men until a piece of equipment was returned. None of these three is ever physically described in the book — no Gray morphology, no metallic skin, no biometrics of any kind appear anywhere in the source.
Name: Philadelphia/Montauk Project Aliens
AKA: None documented. “The Eldridge Grays,” “The Timewalkers,” and “The P-Project Observers” do not appear in the source.
Location – Home System: At least two named origins appear in the source, plus one unnamed group. “The Sirians” are said to come from the star system known as Sirius. A separate group is described only as coming “from the Orion constellation” — explicitly stated in the source to be “a different group of aliens from the Sirians.” A third, unnamed group of aliens was encountered directly in an underground tunnel at Montauk; no origin is given for them.
Distance from Earth: Sirius is approximately 8.6 light-years away (a real, measured distance); no specific distance is given for the Orion-based group or the tunnel-encountered group
Attitude: The Sirians and the Orion-based group are described as having cooperated in providing technological designs, though the extent and nature of that cooperation is treated in the book as rumor rather than confirmed fact. The tunnel-encountered group held two project personnel until a piece of equipment was returned — a guarded, transactional posture, not explicitly described as hostile or benevolent.
Motives: The Sirians reportedly assisted in developing the technology behind the “Montauk chair.” The Orion-based group reportedly provided the design for what became known as the “Orion Delta T antenna,” said to have been motivated by an awareness that humans were nearing a particular technological threshold. The tunnel-encountered group wanted the return of a specific instrument used to charge the “crystal drive” of an underground UFO at Montauk, and were reportedly intent on keeping the workings of that drive a secret from humans.
Physical Appearance: No physical description of any kind is given in the source for the Sirians, the Orion-based group, or the tunnel-encountered group. No Gray morphology, metallic or reflective skin, or biometric detail of any sort appears anywhere in the book.
- Average Height: Undocumented
- Average Weight: Undocumented
- Body Temperature: Undocumented
- Pulse/Respiration: Undocumented
- Blood Pressure: Undocumented
- Life Expectancy: Undocumented
- Hair: Undocumented
- Skin: Undocumented — no “metallic-sheen” or grey skin tone appears in the source
- Eyes: Undocumented
- Sex: Undocumented
Other Physical Information: Undocumented
Special Traits and Abilities: Undocumented — no telepathy, matter-phasing, or “chronal manipulation” ability is described for any of these groups in the source
Communication Type: Undocumented
Origin: Sirius (for the Sirians); the Orion constellation (for a separate, named group); undocumented for the tunnel-encountered group
Life Form Type: Undocumented
Subspecies: Not applicable — this is not one species but at least three distinct, separately described alien parties appearing at different points in the source: the Sirians, the Orion-based group, and the unnamed tunnel group
Most Common Species: Not applicable
Level of Species: Undocumented
Habits: Provided technological designs reportedly used in the Montauk chair and the “Orion Delta T antenna”; the tunnel-encountered group briefly held two project personnel in what the source describes as an “artificial reality” until an instrument was returned to them
Transportation Type: An underground UFO is mentioned at Montauk, described only as powered by a “crystal drive.” No shape, size, or further description is given. There is no “disk-shaped craft with internal rotating mercury-plasma” described anywhere in the source.
Witnesses Reports: Preston Nichols, the book’s author and self-described technical director of the Montauk Project; Duncan Cameron and Edward (Al Bielek), who are reported to have directly encountered the tunnel-based alien group underground at Montauk
Special Features/Characteristics: The source recounts a broader theory that the Montauk Project’s creation of an alternate time loop also enabled a marked increase in alien UFO activity reaching Earth, connected in the book to a genuine, documented rise in UFO reports beginning in the 1940s. No source reviewed describes any alien appearing “on the deck of the USS Eldridge during the Phase-Out,” as previously claimed on this page.
Summary/Description: The Montauk Project’s own primary account, by Preston Nichols, names three separate and undescribed alien parties rather than one uniform species: the Sirians, said to have assisted in designing the Montauk chair; a group from the Orion constellation, said to have separately provided the design for the “Orion Delta T antenna”; and an unnamed group encountered directly underground by Duncan Cameron and Edward, who briefly held the two men until a piece of equipment tied to an underground UFO’s “crystal drive” was returned. No physical description exists for any of these three in the source.
Source: Preston B. Nichols with Peter Moon, The Montauk Project: Experiments in Time (Sky Books, 1992).
Related Cases: None documented.
DETAILED REPORT
Preston Nichols’ own account of the Montauk Project, written with Peter Moon, mentions alien involvement at several distinct points, none of which describe a single, unified “Gray”-type species. The book suggests that the technology behind the Montauk chair may have been aided by “the Sirians,” described only as “an alien race who come from the star system known as Sirius,” with the theory holding that the Sirians provided a basic design that human researchers then worked out further. Separately, the book describes a related piece of hardware, referred to as the “Orion Delta T antenna,” said in a “persistent rumor” to have been given to the project by aliens from the Orion constellation — explicitly noted in the text as “a different group of aliens from the Sirians.” According to this rumor, the Orion-based group acted because they were aware that human researchers were nearing a specific technological threshold.
A third and more direct alien encounter is described later in the book: Duncan Cameron and a man referred to as Edward (identified elsewhere as Al Bielek) reportedly entered a side tunnel underground at Montauk that turned out to be “an artificial reality created by the aliens” who then revealed themselves. This unnamed group held the two men, wanting a specific piece of equipment — “a very sensitive instrument that charged the crystal drive” of a UFO reportedly present underground at Montauk — before releasing them. The aliens did not object to leaving the ship itself behind but were, per the account, very intent on keeping the workings of its drive source secret from humans. Duncan and Edward eventually recovered the instrument, returned it, and went on to carry out other orders at the Eldridge.
Separately, the book recounts a broader theory that the Montauk Project’s creation of an alternate time loop also enabled a marked increase in alien UFO activity on Earth, tying this to a genuine, documented rise in UFO reports beginning in the 1940s. At no point does the book offer a physical description — height, skin color, or any biometric detail — for the Sirians, the Orion-based group, or the tunnel-encountered aliens.
RESEARCHER’S NOTES
The Montauk Aliens — Three Undescribed Groups, Not One Species
- Classification Correction: This entry previously described a single, uniform “metallic-skinned Gray” species from Zeta Reticuli, complete with a full biometric panel, named subspecies (“Engineers,” “Temporal Wardens”), a “Level X” classification, and a claimed appearance on the deck of the USS Eldridge during a “Phase-Out.” None of this appears in Preston Nichols’ own primary account, which instead names three separate, physically undescribed alien parties: the Sirians, an Orion-based group, and an unnamed tunnel-encountered group. All fabricated detail has been removed.
- Source Chain Assessment: This entry now rests directly on Preston Nichols’ own published account, the primary source for the Montauk Project narrative, rather than on secondhand paraphrase. Nichols’ book itself repeatedly labels much of its content as “soft facts” not backed by hard documentation, and this entry should be read with that same caution built directly into its own source.
- Pattern Context / Comparative Cases: This is a case where consulting the actual primary text, rather than a secondary paraphrase, revealed that “one alien species” was in fact at least three distinct and undescribed groups — a correction similar in kind to the Orion Empire entry’s discovery of multiple named factions where a single monolith had previously been assumed.
- Physical Evidence / Evidentiary Weight: No physical description, photograph, or independent verification exists for any of the three alien parties named in the source. The tunnel encounter in particular rests entirely on the personal accounts of Duncan Cameron and Edward (Al Bielek) as relayed by Nichols.
The Montauk Project’s own primary account names three separate, entirely undescribed alien parties — the Sirians, an Orion-based group, and an unnamed tunnel-dwelling group — rather than the single metallic-skinned Gray species this page previously presented. Even within its own telling, the book asks readers to treat this material as “soft facts,” not established history.
The Orion-based group is described in the source as “a different group of aliens from the Sirians.”



