Silent Invasion

About the Author

Stan Gordon was born in 1949 and has lived his entire investigative life in and around Greensburg, Pennsylvania, in Westmoreland County. By his own account, his interest in unexplained phenomena began in October 1959, at age ten, after he heard a radio program discussing anomalous events; he began actual field investigations of UFO and paranormal reports in Pennsylvania in 1965, the same year that would define his public career when a large object reportedly came down in the woods outside Kecksburg that December. Gordon trained as an electronics technician specializing in radio communications and spent more than forty years working in advanced consumer electronics sales — a day job that ran in parallel with, and by his own description helped fund, the field investigations that produced this book and his broader body of work.

Gordon's investigative infrastructure predates this book by decades. In the late 1960s he coordinated telephone UFO sighting reports for the UFO Research Institute of Pittsburgh; in 1970 he founded the Westmoreland County UFO Study Group, the first of three volunteer research organizations he would go on to run, which expanded into the Pennsylvania Center for UFO Research in 1975; and in 1981 he founded the Pennsylvania Association for the Study of the Unexplained (PASU), serving as its director and editing its PASU Data Exchange newsletter until the organization ceased operating in November 1993. He also served over the years as Pennsylvania State Director for the Mutual UFO Network (MUFON) and, in 1987, became the first recipient of MUFON's Meritorious Achievement Award for a UFO investigation. Gordon wrote, produced, and narrated the 1998 video documentary Kecksburg: The Untold Story, and this 2010 casebook sits between two other Gordon-authored Pennsylvania titles, Really Mysterious Pennsylvania and his more recent Astonishing Encounters: Pennsylvania's Unknown Creatures. The book itself credits Roger Marsh as editor and Michael Coe as designer alongside Gordon on its own title page — the only named contributors besides the witnesses Gordon interviewed directly.

Historical Context & Origins

The wave this book documents began, per Gordon's own account, in the summer of 1973, when UFO reports started increasing sharply across Pennsylvania; as the months went on, Gordon's investigative network — by then including the Westmoreland County UFO Study Group and its statewide successor, the Pennsylvania Center for UFO Research — began fielding a parallel and increasingly overlapping category of reports describing large, hairy, bipedal creatures, sometimes at the same locations and on the same nights as reported UFO activity. That overlap, rather than either phenomenon in isolation, is the book's actual subject, and it places Silent Invasion in a specific, narrow subgenre of American Fortean literature — UFO-cryptid crossover casebooks — alongside titles like John Keel's Point Pleasant, West Virginia account covered in this site's own Mothman Prophecies entry, though the Pennsylvania wave Gordon documents came roughly seven years after the 1966–1967 Mothman sightings and involved a different investigator working a different, much larger multi-county area.

Gordon was not a late arrival documenting secondhand testimony; he was already Pennsylvania's most visible civilian UFO investigator by 1973, having spent the previous eight years building the reporting infrastructure — a public hotline, volunteer field teams, and direct relationships with local police and press — that let him respond to and log reports as they came in during the 1973–1974 wave itself, rather than reconstruct the events years afterward from newspaper archives. That real-time collection process is the book's chief evidentiary asset and also, as this entry's Critical Reception section discusses, its chief limitation: contemporaneous witness testimony collected quickly is not the same thing as independently verified physical evidence.

The book arrived 37 years after the events it describes, published by Gordon's own imprint, Stan Gordon Productions, rather than a mainstream trade press — a self-publishing route common among the small community of long-serving regional UFO investigators whose archives are otherwise valuable primarily to specialists and other researchers rather than a mass general-interest audience. Its 348 pages, credited to Gordon with Roger Marsh as editor and Michael Coe as designer, represent the closest thing to a definitive, single-source published record of a flap that otherwise survives mainly in period newspaper clippings and Gordon's own personal case files.

This site's own Kecksburg Incident case file already documents Gordon's decades-long role as that 1965 case's primary investigator, and its own Further Reading list already cites this exact book by title, author, and year — making this entry a direct expansion of a citation the site had already made rather than an introduction of an unfamiliar source.

Core Arguments & Key Concepts

The book's organizing claim is that UFO activity and Bigfoot-type creature reports in Pennsylvania during 1973–1974 were not two unrelated categories of strange report but a single, geographically and temporally overlapping pattern worth documenting as such. Gordon does not argue that UFOs and Bigfoot are the same phenomenon, or that one causes the other; the book's own case selection — incidents explicitly framed around titles like "UFOs And Bigfoot Seen At The Same Time And Place" — is built to let the pattern of co-occurrence speak for itself rather than to assert a specific causal theory the evidence cannot support.

A second recurring thread is the reported behavior of the creatures themselves, which Gordon's witnesses describe as resistant to conventional explanation in ways that go beyond simple misidentification: cases framed as "The Case Of The Vanishing Bigfoot" describe witnesses who fired on a creature at close range only to have it disappear without a trace, blood, or body — an evidentiary gap Gordon treats as itself significant rather than glossing over, since a flesh-and-blood animal shot at close range would ordinarily leave some physical trace.

A third, more unusual thread documents witnesses reporting visits from unidentified men who arrived to question them about their sightings before any official agency had been publicly notified — cases the book frames under headings like "Mystery Men Interviewing Witnesses." This material sits within the same broader Men-in-Black-adjacent testimony tradition that runs through decades of American UFO literature, and Gordon presents it as witness-reported behavior worth logging rather than as proof of any specific government or intelligence involvement.

Structurally, the book is organized as a chronological casebook rather than a thesis-driven argument: incident after incident, dated and located, drawn from Gordon's own field notes and witness interviews, with the cumulative volume of reports functioning as the book's real argument. This is a deliberate choice consistent with Gordon's decades of field-investigator practice — log what witnesses report, note what can and cannot be independently corroborated, and let the pattern of the data carry the weight a stronger narrative voice might otherwise have to supply.

The book's most honest and most consequential argument is one it makes only implicitly, through what it does not claim: after cataloguing dozens of reported UFO-Bigfoot correlation incidents across two years of fieldwork, Gordon does not assert that the underlying creature has been proven to exist in a conventional biological sense, and the book's own recurring emphasis on the absence of a body, verifiable trackway, or other hard physical evidence — discussed explicitly in reader reception of the "why has no one ever found a dead Bigfoot or bones" question — functions as the same kind of self-limiting honesty this site's other paranormal-investigation Essential Reading entries, including Hunt for the Skinwalker, are built around.

Key Cases & Evidence Discussed

This site's own Kecksburg Incident (Case File #013, December 9, 1965) is not the direct subject of this 2010 book, which focuses on the later 1973–1974 wave, but the two are inseparable in Gordon's own career: he is the same investigator this site's Kecksburg case file already credits by name as the event's primary civilian investigator, and the case file's own Further Reading list already cites this exact title, confirming the site's existing editorial position that Gordon's Kecksburg work and his broader Pennsylvania casebook are part of one continuous investigative record centered on the Kecksburg woods ravine and the wider southwestern Pennsylvania region.

The book's title case category — incidents in which witnesses reported UFO activity and a Bigfoot-type creature at the same time and location — is its most distinctive contribution to the broader UFO-cryptid crossover literature, presented across multiple separate incidents rather than as a single anchor case, which is itself notable: Gordon's argument rests on the reported frequency of the pattern across many witnesses and locations, not on any one especially dramatic sighting.

"The Case Of The Vanishing Bigfoot," in which a witness reportedly fired on a creature at close range only for it to disappear without leaving a body or blood trail, is one of the book's most-cited individual incidents in secondary summaries of its contents, and this entry treats it as representative of the evidentiary problem running through the entire volume: a dramatic witness account with no corroborating physical trace.

The book's "Mystery Men Interviewing Witnesses" material describes unidentified individuals reportedly contacting sighting witnesses before any official investigation had been publicized — testimony consistent with the decades-old Men-in-Black witness-intimidation narrative found elsewhere in American ufology, which Gordon logs as reported behavior without asserting a specific identity or agency behind it.

Critical Reception & Controversies

Reader response on Goodreads sits at 4.01 out of 5 stars across 68 ratings and 7 written reviews as of this entry's research, a solidly positive but modest sample size consistent with a regionally focused, self-published casebook rather than a mass-market title. Reviewer Brian Parsons wrote that "the stories pile up quickly and I felt that it was fiction until I reminded myself these were real reports from real people," a reaction this entry reads as capturing both the book's core appeal and its core evidentiary limitation in a single sentence: the reports are numerous and vivid, but they remain reports.

Reviewer Jo Anne's Goodreads comment — that Gordon "makes some interesting points — why has no one ever found a dead Bigfoot or bones" — is, in this entry's assessment, the single most important piece of reader reception the book has generated, because it identifies from outside the book the same evidentiary gap this entry's Core Arguments section treats as the volume's real, if implicit, thesis.

The review site Sasquatchploitation offered the most substantive published critical assessment located during this entry's research, noting that Gordon's book "lacks [John Keel's Mothman Prophecies'] strong narrative" as a work of writing craft, while still concluding it is "a must read for a list of cases crossing the UFO/Bigfoot worlds" for readers specifically interested in that crossover subgenre — a fair summary of a book whose value is archival and evidentiary rather than literary.

Set against Gordon's own decades of institutional credibility — MUFON's 1987 Meritorious Achievement Award, PASU's twelve years of active operation, and this site's own reliance on him as the named primary investigator of the Kecksburg case — the book's central limitation is the one common to nearly every witness-testimony casebook this site covers: none of its individual UFO-Bigfoot correlation incidents has been independently verified by physical evidence, and Gordon's own reported framing of the "no body, no bones" problem suggests he is aware of, rather than blind to, that limitation.

No mainstream skeptical publication's dedicated review of this specific title was located during this entry's research, consistent with a self-published, regionally distributed casebook that circulated primarily within Fortean and cryptozoology-adjacent reading communities rather than through channels that typically draw organized skeptical commentary; this entry notes that absence rather than treating it as evidence either for or against the book's claims.

Influence & Legacy

This book's most concrete, already-documented legacy on this site is bibliographic: this site's own Kecksburg Incident case file already cites it by title and author in its Further Reading list, and this entry both confirms and substantially expands that existing citation rather than introducing an unfamiliar source to the site.

Within the narrower UFO-cryptid crossover subgenre, the book stands as one of the few full-length casebooks built entirely from a single investigator's own contemporaneous field notes rather than reconstructed decades later from press archives, giving it a documentary status among specialists in the crossover topic that a more polished, narrative-driven treatment of the same material might not carry.

Gordon's continued public career after this book's 2010 publication — regional lecture appearances on UFO and Bigfoot topics, ongoing operation of his Stan Gordon's UFO Anomalies Zone website, and his subsequent 2010s book Astonishing Encounters: Pennsylvania's Unknown Creatures — suggests this casebook functioned as a mid-career consolidation of his decades of cryptid-adjacent field reports rather than a one-off project, extending the same documentary method into his later work.

Within this site's own library, the book sits naturally alongside Hunt for the Skinwalker and The Mothman Prophecies as one of a small cluster of Essential Reading titles documenting reported overlap between UFO activity and other anomalous or cryptid phenomena, and its focus on Pennsylvania specifically complements this site's existing, more heavily developed Kecksburg case-file coverage of the same general region.

The Book

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