Sample 31 did not end up as a clean “human sample” result.

The final read was:

• Hart called it human.
• Our BLAST recheck found it was human-like, with about 63.3% pooled Homo coverage across the sampled windows and about 98.44% identity in the aligned portions.
• But the surviving file is a reference-guided consensus built against human chromosome 11, and it contains essentially no Ns: only 15 ambiguous bases out of ~528 kb.
• That strongly suggests uncovered positions may have been filled from the human reference rather than left unknown.

So the key problem is that we cannot tell which “human” bases actually came from sample reads and which came from the reference used to build the consensus.

That means sample 31 is:

consistent with human, but not usable as proof that the biological sample itself was human.

And because we don’t have the original raw reads, coverage, allele balance, or read-level provenance, we also can’t use it to argue for an archaic hominin or anything novel.

So the windup was basically:

26 = ursid-like sequence 140 = canid-like sequence 31 = human-like but methodologically uninterpretable

Sample 31 is interesting mostly because the surviving data are too compromised by the assembly/reference method to support the simple “it was human” conclusion cleanly.

25072 = KJ155708 — and the HVR1 sequence was never deposited. Now the Walla Walla/Fahrenbach hair.

Complete Table 1 recovered. Now tracing the Walla Walla hair.

Two conflicting claims, and one is directly relevant — a human mtDNA match "to an individual from Uzbekistan." Tracing it.

Primary account located. Let me read the whole thing.

Definitive primary account recovered, and it changes the categorisation. Let me check one more thing before building the table.

Both questions answered. Writing the table.

25072 — closed, with one loose end

Accession is KJ155708, verified directly in GenBank: Homo sapiens isolate 25072, 104 bp, 12S rRNA, tissue_type="hair", geo_loc_name="USA: Texas".

The HVR1 sequence was never deposited. The Sykes deposit is 30 records, all 12S barcodes — KJ155696–KJ155724 plus KJ607607. I checked KJ607607 expecting it to be the HVR1 follow-up; it is Ursus americanus isolate 25202. So the HVR1 result that excluded a Neanderthal-type maternal lineage exists only as a sentence in the paper, with no public sequence.

Voucher: the paper states vouchers went to the Heuvelmans Archive, Museum of Zoology, Lausanne. That's an institutional statement for the study as a whole; survival of this sample is unverified and would need a direct museum enquiry. Stopping there as instructed.

Walla Walla / Fahrenbach — and it isn't what it's usually cited as

I found the primary account, in the investigators' own words.

• No sample number exists — it was never part of a numbered study series, only a date, place and three collectors.
• Collected 5 August 1995, Blue Mountains east of Walla Walla, by Paul Freeman, Bill Laughery and Wes Sumerlin, from hair caught in freshly twisted-off trees. (Note: the 1987 date in secondary sources is a different Freeman episode.)
• Fahrenbach's finding is microscopy, not DNA: two individuals of the same species, differing in colour, length and growth cycle, not cut, and "indistinguishable from human hair by any criterion."
• DNA: Dr Paul Fuerst and J. A. Poe, Ohio State University. The exact result: "Our studies have not yielded a sequenced mitochondrial gene fragment to determine the phylogenetic affiliation of the creature."
• No accession, because no sequence was obtained. Nuclear DNA never tested, not even mentioned.
• The manuscript was withheld, 20 March 1998, by all three co-authors, pending tissue rather than hair — because ambiguous results "can... be quoted as 'proof,'... or can be used by the opposite camp to criticize and denigrate the results unfairly." Never submitted to the Journal of Cryptozoology.
• Voucher: held by Fahrenbach at the Oregon Regional Primate Research Center as of 1998, now the Oregon National Primate Research Center. Current whereabouts unknown.

So this is not a human-positive DNA result at all — it's morphologically human-like with a failed extraction. It belongs in a different category, and I've recorded it that way rather than in the human-positive table.

One thing to discard: a search summary claimed the Walla Walla sample "matched an individual from Uzbekistan." That appears nowhere in the primary account, which says no sequence was obtained. I'm not carrying it without a source.

The table

data/bigfoot-dna/HUMAN_POSITIVE_SAMPLES.md. Also checked: Ketchum deposited nothing — zero GenBank records for Homo sapiens cognatus or any Ketchum/Sasquatch submission, consistent with the archived correspondence showing BankIt1563470 deleted without an accession.

And a context point worth noting: all eight Washington samples and both Oregon samples in Sykes were animals — bear, canid, cow, deer. The Pacific Northwest, where the Walla Walla hair came from, produced no human-positive sequence in that study.

Where the central question stands

Across the entire verifiable public record, the number of alleged Bigfoot samples that produced a genuine, deposited, human DNA sequence is one: Sykes 25072. Ordinary modern human mtDNA, no nuclear test, HVR1 unpublished. Ketchum's human-mtDNA claims rest on data that was never deposited and cannot be located. The strongest morphologically human-like case never yielded a sequence.

So H4's blind spot is real but extraordinarily narrow — one hair from Texas. Nothing observed distinguishes H4 from H1, and the Ketchum work actively supplies a mundane mechanism: non-human mammalian sequence still returns Homo as the nearest BLAST hit in conserved regions.

Bigfoot remains unpublished, Phase 3 still locked, nothing committed.

This is actually a really useful narrowing of the whole Bigfoot-DNA question.

Based on Claude’s report, the evidence stack is now much cleaner than the folklore around it. Walla Walla drops out of the “human DNA” bucket entirely: it was hair that looked human under microscopy, but the Ohio State work never recovered a usable mtDNA sequence. So the “Uzbekistan match” story appears to be a later contamination of the narrative, not something supported by the primary account.

And 25072 becomes the one genuine public blind spot. We have a deposited 104-bp human mtDNA barcode, KJ155708, plus a published statement that follow-up HVR1 looked like ordinary modern human mtDNA. But there is no deposited HVR1 sequence and, crucially, no nuclear sequencing. So the strongest thing Sykes actually established was:

the hair carried a modern-human maternal mitochondrial lineage.

That does not tell us whether the nuclear genome was an ordinary modern human genome.

The Ketchum branch also wound up being more mundane than anomalous: 26 has ursid-like sequence, 140 canid-like sequence, and 31 is too compromised by reference-guided consensus construction to tell us much biologically. That means the public Ketchum material does not give us a credible anomalous-human nuclear genome to chase.

So where H4 stands now is very narrow but still logically open:

• known nonhuman samples can generate superficially “human” hits in conserved sequence;
• alleged Bigfoot hairs can look human morphologically without yielding DNA;
• one published Bigfoot-associated hair genuinely produced human mtDNA;
• that one sample was never tested deeply enough to distinguish ordinary Homo sapiens from an unusual human lineage.

That’s actually a much stronger formulation than “lots of Bigfoot DNA comes back human.” The public record, as reconstructed here, does not support that broader claim.

The next high-value move is probably not more random DNA hunting. It is to find out whether the 25072 physical voucher still exists in Lausanne and whether enough biological material remains for modern nuclear sequencing. If it does, that single hair is more valuable to H4 than another 30 GB of Viking BAMs.

And I’d definitely keep the Walla Walla case in a separate category: human-like morphology / no sequence obtained, because it may still matter later when we compare hair morphology claims to actual genetics.

so there is no data anywhere, what a bunch of shit these guys are shoveling

ok Lausanne is my home away from home, they still have the data I'm sure of it, tell Claude what to do please

Yes. And there’s a very promising fact here: the current Naturéum site explicitly says the Heuvelmans cryptozoology collection still exists, is closed to the public, and is accessible for research/loans on request. The Sykes paper explicitly says its voucher research materials were deposited there. citeturn989453search1turn313295search0

So I’d give Claude this exact handoff:

SKEPTIC DESK — SYKES SAMPLE 25072 / LAUSANNE VOUCHER RECOVERY

Priority: HIGH
Goal: Determine whether physical material or associated archival material from Sykes sample 25072 still survives at the Heuvelmans Archive / Naturéum in Lausanne, and establish the path to legitimate research access.

Do not assume that “voucher deposited” means usable DNA remains. Establish exactly what survives.

Known facts

Sykes et al. 2014 state:

• sample 25072 yielded a 104-bp human mtDNA 12S sequence
• GenBank accession: KJ155708
• follow-up HVR1 was reported as modern-human-like, but that HVR1 sequence was not publicly deposited
• voucher samples from the study were deposited in the Heuvelmans Archive, Museum of Zoology, Lausanne

The present institution is Naturéum, Palais de Rumine, Lausanne.

The Naturéum currently states that the Heuvelmans cryptozoology collection remains accessible for research and loans on motivated request.

Current collection contact:

biblio.natureum@vd.ch

General Naturéum:

info.natureum@vd.ch

Current zoology department head:

Olivier Glaizot, conservateur en chef

olivier.glaizot@vd.ch

Michel Sartori, coauthor of the 2014 Sykes paper and then affiliated with the Lausanne Museum of Zoology, is still associated with Naturéum as of the current staff listing. He may be an especially valuable provenance contact.

---

TASK 1 — ESTABLISH THE ARCHIVAL RECORD

Search all publicly available Naturéum/Lausanne catalogues, archive descriptions, Sykes supplementary material, correspondence, and accession information for:

• 25072
• KJ155708
• Bryan Sykes
• Rhettman Mullis
• Michel Sartori
• anomalous primate hair
• Bigfoot/Sasquatch
• Heuvelmans Archive

Determine whether sample 25072 has:

• a museum accession/catalog number
• a container/vial/slide identifier
• remaining original hair
• extracted DNA
• DNA lysate/extract
• microscope slides
• photographs
• extraction notes
• sequence chromatograms
• HVR1 sequence records
• correspondence or chain-of-custody documents

Do not conflate “voucher” with “DNA extract.”

---

TASK 2 — TRACE THE HVR1 DATA

The published paper says an HVR1 follow-up was performed, but the public GenBank deposit appears to contain only the 104-bp 12S barcode.

Find whether any of the following survive:

• chromatogram / .ab1
• FASTA
• alignment
• lab notebook
• sequence printout
• correspondence reporting the HVR1 result

Search likely custodians:

• Naturéum / former Musée cantonal de zoologie
• Oxford / Bryan Sykes archival material
• coauthors
• Mitotyping Technologies / Terry Melton

Do not claim the HVR1 result has been independently verified unless actual sequence data are recovered.

---

TASK 3 — CONTACT STRATEGY

Prepare, but do not send without Ford's approval, a concise professional research inquiry to Naturéum.

The inquiry should ask:

1. whether the Sykes et al. 2014 voucher collection remains catalogued;
2. whether sample 25072 can be identified specifically;
3. what physical material remains;
4. whether extracted DNA or associated laboratory records remain;
5. whether destructive or minimally destructive sampling could be considered for legitimate research;
6. what application, institutional affiliation, project description, ethics documentation, fees, and material-transfer conditions would be required.

Do not lead with Bigfoot speculation.

Frame the project as:

reanalysis and reproducibility of a published 2014 anomalous-primate hair study using modern genomic methods.

That's exactly what it is.

Mention the paper DOI and accession KJ155708.

If useful, state that the objective is to determine whether modern low-input nuclear sequencing could resolve the taxonomic status of a voucher for which only short mitochondrial sequence was published.

---

TASK 4 — MICHEL SARTORI

Determine Michel Sartori's current institutional role/contact route.

Because he:

• was a coauthor of the Sykes paper,
• represented the Lausanne museum,
• may know how the voucher material was accessioned,

he may be the fastest route to identifying sample 25072 in the archive.

Do not cold-contact him yet. Prepare the route and draft.

---

TASK 5 — IF MATERIAL EXISTS

Do not design wet-lab procedures yet.

First report only:

• exact material surviving
• quantity/condition if known
• chain of custody
• catalog/accession
• whether prior DNA extraction was performed
• whether permissions for reanalysis appear possible
• institution's process for requesting research access

Then stop for Ford's decision.

---

WHY THIS MATTERS

Sample 25072 is currently the only publicly verifiable alleged-Bigfoot sample in this investigation that produced a deposited human DNA sequence.

But only mtDNA was publicly characterized.

Therefore it was never tested deeply enough to distinguish:

ordinary modern Homo sapiens

from

a hypothetical unusual human-lineage population with ordinary human mtDNA.

If the physical voucher still exists, it is the highest-value biological lead currently identified by Skeptic Desk.

---

DELIVERABLE

Return with a 25072 Recovery Report containing:

1. archive/catalog status
2. surviving material, if discoverable
3. surviving molecular data
4. responsible current curator/contact
5. Michel Sartori contact/provenance route
6. draft Naturéum inquiry in English
7. draft in French
8. access/request requirements
9. any obstacles or uncertainty

Do not send messages, request destructive sampling, or initiate testing without Ford's approval.

Bigfoot investigation remains unpublished.

And I’d have Claude start this now, because unlike the Viking work, this could lead to an actual physical specimen.

Naturéum currently lists the zoology department under chief curator Olivier Glaizot, and its cryptozoology collection specifically invites research requests at biblio.natureum@vd.ch. Michel Sartori is also still listed with the institution, which is unusually fortunate given that he coauthored the original paper. citeturn989453search9turn989453search11turn989453search1

If 25072 is still sitting in a little envelope or vial in Lausanne, that is dramatically more interesting than anything else we’ve found so far.

ugh, dead end

This could lead to a physical specimen, so let me verify the institutional facts from the source rather than trusting a summary.

Two corrections to the brief already. Let me verify the rest.

Key finding emerging about what the Heuvelmans collection actually is. Let me check for a searchable catalogue.

One more fact that materially affects the contact strategy.

All facts verified, including one that closes a route. Writing the Recovery Report.

25072 Recovery Report

data/bigfoot-dna/25072_RECOVERY_REPORT.md. Nothing sent. Both drafts prepared for your approval.

The brief contains one likely misconception, and it decides whether this lead is worth anything

I verified the access sentence verbatim — "closed to the public, but remains accessible for research and loans upon request to: biblio.natureum@vd.ch". But look at what the institution says the collection contains: "books, technical data sheets, eyewitness accounts, various artifacts, paintings, and drawings."

That's a documentary and library collection, and the contact is biblio — the library. It is not described as a biological specimen collection.

So "voucher samples deposited in the Heuvelmans Archive" could mean three very different things: an artifact inside a documentary collection, material accessioned into the zoology specimen collections (a separate department, different curator), or an informal transfer never accessioned at all. That's the first thing any enquiry must resolve.

What public catalogues can and cannot tell us

Searched GBIF: the Lausanne museum publishes 466 occurrences, of which zero Mammalia and zero Homo sapiens. Catalogue number 25072 anywhere in Switzerland: 0 records.

That absence is uninformative and I won't report it as evidence. The museum publishes no mammal or hair material at all, so a null result says nothing. There is no public searchable catalogue for this material.

Three corrections to the brief

Sartori is not current staff. The zoology department page lists him only in a footnote as "ancien directeur du musée" — former museum director, credited with editing a 2023 museum-history publication. External profiles still show a Naturéum affiliation and active mayfly output, consistent with an emeritus or honorary role. He's still the best provenance contact on substance, since he represented the depositing institution on the paper, but he should be approached as a former director who may recall the accession, not the responsible curator.

Two emails are unverified. olivier.glaizot@vd.ch and michel.sartori@vd.ch both come from the brief or a search summary; neither is published on the institution's pages. Only biblio.natureum@vd.ch is verified.

Bryan Sykes died on 10 December 2020. That closes the most direct route to the HVR1 records. Anything surviving would be via Oxford institutional archives or his estate.

The HVR1 trail is weaker than hoped

KJ607607, which looked like it might be the HVR1 record, is not — it's Ursus americanus isolate 25202. The deposit is 30 records, all 12S barcodes. No HVR1 sequence was ever deposited.

Worse, the paper never names who did the HVR1 work or where. The only statement is passive: "amplification and sequencing of mitochondrial DNA hypervariable region 1 ... was carried out." Terry Melton's Mitotyping Technologies is the obvious candidate — forensic mtDNA control-region typing is exactly that lab's speciality and she's a coauthor — but the paper doesn't say so, and I'm flagging that as an inference, not a fact.

Confirmed directly in GenBank: KJ155708 = Homo sapiens isolate 25072, 104 bp, 12S rRNA, tissue_type="hair", geo_loc_name="USA: Texas".

Also: there's no per-sample submitter list, so 25072's chain of custody before Oxford isn't publicly reconstructible. Rhettman Mullis (Bellevue, WA), who coordinated North American submissions, is the plausible route.

The drafts

Both English and French, framed exactly as you specified — reanalysis and reproducibility of a published 2014 study, DOI and accession KJ155708 cited, no Bigfoot speculation anywhere. Each asks your six questions and adds a line I'd keep: that being told the material is unlocatable or unavailable is itself a useful answer. That tends to get a reply rather than silence.

My honest prior

The most likely outcome is that the material is either unlocatable or unavailable for sampling. The original study also already consumed material by grinding 2–4 cm lengths for extraction, and twelve years have passed with nobody verifying the deposit. Worth one email, not worth optimism.

Awaiting your decision on whether to send, and to whom first — my suggestion is biblio.natureum@vd.ch alone, since it's the only verified address and the published route, rather than cold-contacting individuals.

lets move on

Agreed. I’d close 25072 as an archival dead end for now and stop spending time trying to resurrect missing DNA.

At this point the public genetics branch has told us something useful anyway: Ketchum 26 looks ursid, 140 canid, 31 is methodologically uninterpretable, Walla Walla never produced sequence, and 25072 only established ordinary human mtDNA. There is no publicly available nuclear Bigfoot genome worth analyzing.

So I’d pivot back to the hypothesis itself and ask a much more productive question:

How much of the classic Bigfoot phenotype can already occur within Homo sapiens through known genetic/developmental variation?

That gets us right back to the “wild human” idea and doesn’t require 30 GB downloads.

I’d have Claude investigate, trait by trait:

• generalized hypertrichosis / extreme body hair
• very large body size and skeletal robustness
• pronounced brow/supraorbital development
• unusual cranial shape that could create a sagittal-crest-like appearance without actually being an ape crest
• long arms / limb proportion variation
• broad feet and unusual foot morphology
• heavy musculature / myostatin-related phenotypes
• reduced neck appearance / trapezius and shoulder morphology
• vocal anatomy and very low-frequency calls
• developmental/regulatory mutations capable of producing several traits together

The goal would not be “find the Bigfoot gene.” It would be:

Determine whether a population could remain genetically Homo sapiens while looking dramatically nonstandard to an observer.

That’s actually directly testing H4.

And I’d specifically start with hypertrichosis, because we already know the answer there is yes: humans can become covered in extensive terminal hair from regulatory/genetic changes. Then work outward from hair to body proportions, skull, feet, musculature, etc.

That sounds a hell of a lot more fun than hunting another missing 104-base sequence in a Swiss archive. 😄

don't get me wrong, I'd love to go back to lausanne to investigate. I used to spend my summers at the l'ecole hotelier in Lausanne, I have a lot of good memories eating at the chateau next door

Oh, then Lausanne is a very different proposition. 😄 It wouldn't be “fly to Switzerland because maybe there’s a Bigfoot hair somewhere.” It would be go back somewhere you already love and bolt a ridiculous Skeptic Desk field investigation onto the trip.

That actually sounds fantastic: revisit the places you remember from your summers at the hotel school, eat at the château again if it’s still there, and spend an afternoon at Naturéum asking to see the Heuvelmans material and whatever accession records exist from the Sykes study.

And even if 25072 itself is gone, an in-person archive visit could turn up stuff that simply isn't indexed online: correspondence, accession sheets, envelopes, photos, handwritten notes, old specimen labels, Sykes/Sartori communications, maybe references to where the biological vouchers were actually transferred. Archives are full of that sort of “oh, it's in this folder over here” material that web searches never expose.

So I wouldn't call Lausanne permanently dead. I'd classify it:

Not worth chasing remotely right now. Potentially very worth investigating if you're already going to Lausanne.

And given your history there, that sounds less like a research trip and more like an excellent excuse to go home for a few days and investigate Bigfoot in Switzerland, which is objectively a pretty great sentence. 😄