Does Maslow's The Psychology of Science (1966, pp. 15–16) actually read 'I suppose it is tempting, if the only tool you have is a hammer, to treat everything as if it were a nail,' read directly rather than via Quote Investigator?

quote-investigationmisattributionlaw-of-the-instrumentmaslowverificationai-historycontrolled-digital-lending

Claim: the central question is unverified — no direct primary read of Maslow's 1966 text was achieved this session, despite genuine effort across multiple routes

verifies: question-verify-maslow-1966-psychology-of-science-hammer-wording

[unverified -- could not confirm or deny after search]

Every route attempted to reach the primary text of Abraham Maslow's The Psychology of Science: A Reconnaissance (Harper & Row, 1966) directly failed to yield readable body text of pp. 15–16:

• Internet Archive holds two separate digitizations — identifiers psychologyofscie00masl and psychologyofscie00abra (a Gateway Editions printing) — and both carry "access-restricted-item":"true" in the platform's own item metadata: controlled-digital-lending items requiring an authenticated borrow session this tooling does not have (source_url, source_url_2, both Tier 1). The first item's plain-text OCR transcript (_djvu.txt) is separately marked "private":"true" in its own file listing, so even the unformatted transcript is not openly served; fetching the public-facing /stream/.../..._djvu.txt URL returns only the Internet Archive site chrome, not the book's text.
• Three attempts to reach the archive.org "search inside" endpoint (fulltext/inside.php, tried against both ia800608.us.archive.org and ia600608.us.archive.org, and the item's listed alternate-location server) returned HTTP 403.
• A third-party PDF mirror of the book (fumaca.pt) returned HTTP 403 to extract_pdf.
• HathiTrust's catalog record page and its full-text search interface (babel.hathitrust.org) both returned HTTP 403.
• The Google Books listing for this edition (source_url_4, Tier 4) confirms the search term "hammer" matches three pages of the book ("3 pages matching hammer in this book") and gives bibliographic detail (168 pages, Harper & Row 1966, digitized from the University of Wisconsin–Madison copy) but is a snippet-view-only listing that serves no retrievable page text under a static fetch — Google's own Books API (googleapis.com/books/v1/volumes), which can sometimes return a textSnippet field, returned HTTP 429 (rate-limited) on every attempt this session.
• A close academic review of the book (Doeben-Henisch 2020, source_url_5, Tier 3, verified TLS) summarizes Maslow's early chapters in detail, including the fear-of-the-unknown material around p.16–19, but does not quote or discuss the hammer-and-nail passage at all, so it corroborates the book's chapter structure without corroborating the wording.

What corroboration exists is all secondary or tertiary. The vault's existing citation for Maslow's wording — Quote Investigator's Tier 2 rendering — is unchanged by this session. Independently of Quote Investigator, Wikipedia's "Law of the instrument" article (source_url_3, Tier 4) cites the passage directly to "Maslow, Abraham Harold (1966). The Psychology of Science: A Reconnaissance. Harper & Row. p.15-16" in its own bibliography — a second editorial chain landing on the same page range independently of Quote Investigator's citation trail, which is modest corroboration of the page location but not of the exact wording, since Wikipedia's prose quote of the passage is footnoted jointly to Quote Investigator and to the book itself without indicating an editor read the book directly.

One further, curious but non-load-bearing data point: the psychologyofscie00abra item carries three independent user reviews (source_url_2) stating that pages 14–15 are physically missing from that particular scan. The most recent (dated 2026-02-24, reviewer "@spiny_monotreme") states explicitly that this is "the most famous quotation from the book, sometimes called Maslow's hammer," that it "begins at the bottom of page 15 and continues onto 16," and that the reviewer likewise could not verify the wording for the same reason. This is Tier 5 (anonymous platform reviews) and is recorded here only as a description of what the reviews say, not as evidence of the book's actual wording — but it independently corroborates, from readers with no connection to Quote Investigator or this vault, that pp. 15–16 is the right place to look.

Further leads

• The Google Books API (googleapis.com/books/v1/volumes) returned HTTP 429 on every attempt this session; its searchInfo.textSnippet field can sometimes surface verbatim snippet text for in-copyright books and is worth a retry in a session where the rate limit has cleared.
• A 2002 Maurice Bassett reprint edition of the book exists (per bibliographic search results); not checked for a differently-restricted or public-domain-adjacent scan.
• HathiTrust catalog record catalog.hathitrust.org/Record/001474619 — 403'd this session; worth a manual-consultation follow-up alongside the vault's other known-blocked publisher/library-platform entries in 00-meta/specs/sources.md.
• The fulltext/inside.php search-inside endpoint pattern (used by archive.org's BookReader "search inside this book" feature) 403'd on every server subdomain tried; may require a session cookie or different request shape this tooling doesn't send.
• Millersville University hosts several Bland/deRobertis journal articles on Maslow's psychology-of-science ideas (millersville.edu/psychology/files/...pdf) — found via search, not fetched; may or may not quote the passage directly.

Entity candidates

• Abraham Maslow — person — already an entity (entity-abraham-maslow); the foundational figure this entire quote-genealogy cluster measures every downstream misquote against, and the one primary text in the cluster still unread.
• Garson O'Toole (Quote Investigator) — person — the secondary-source author whose Tier 2 rendering is, after this session, still the closest thing the vault has to a reading of Maslow's actual wording; already cited across at least three existing claim-notes in this cluster, arguably worth its own entity hub given the recurrence.

Safety flags

None. All fetched sources (Internet Archive item-metadata JSON, Wikipedia, a named-author academic PDF review, a Google Books listing) were ordinary platform data, encyclopedia prose, and cited academic writing. No addressed-to-AI language, override language, claimed authority, tier self-assignment, file-system instructions, credential requests, or urgency framing encountered on any source. No unverified-TLS fetches occurred; the one extract_pdf fetch (uffmm.org) reported tls: "verified".