Two archives, queried live.
Every record below comes from The Met or Smithsonian Open Access and was filtered on that archive’s own rights field before it reached this page. 22 shown for “William Turner of Oxford” — 64 records examined, 33 dropped by the rights gate.
Archives queried 2026-09-03 22:17 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Salisbury Plain with Old Sarum in the distance, Wiltshire
William Turner of Oxford · 1835–45

Dicranum fuscescens Turner
Artist not stated in the record · 17 Jul 1954

Quilt, Album pattern
Brown and Turner families · begun 1846

Dicranum fuscescens Turner
Artist not stated in the record · 16 Jul 1954

View of University Park looking towards New College, Oxford
William Turner of Oxford · after 1825

Carex dioica L.
Artist not stated in the record · 11 May 1865

Venice, from the Porch of Madonna della Salute
Joseph Mallord William Turner · ca. 1835

Hieracium amplexicaule L.
Artist not stated in the record · 6 Aug 1867

Whalers
Joseph Mallord William Turner · ca. 1845

Letter to William Turner from Eyamba V
Artist not stated in the record · 1842

Saltash with the Water Ferry, Cornwall
Joseph Mallord William Turner · 1811

1c Black McKinley Domestic Card
Oxford Paper Company · January 2, 1908

The Wedding of Stephen Beckingham and Mary Cox
William Hogarth · 1729

Letter to William Turner from Eyo Honesty II
Artist not stated in the record · 1842-1845

The Backgammon Players
Philip Webb · 1861

William Turner
Charles Balthazar Julien Févret de Saint-Mémin, 12 Mar 1770 - 23 Jun 1852 · 1800

The Lake of Zug
Joseph Mallord William Turner · 1843

Letter to William Turner from Eyo Honesty II
Artist not stated in the record · 1843

Portal from the Church of San Leonardo al Frigido
Biduinus · ca. 1175

Autograph note written to William Turner by Eyamba V
Tom Eyo, Nigerian, 1800 - 1900 · 1842-1845

Footed goblet with bulging bowl
Philip Webb · 1860

Annunciation Triptych (Merode Altarpiece)
Robert Campin · ca. 1427–32
Where these records came from.
Two archives are wired, and only two. Each one is filtered on its own rights field — never on a title match, and never on the presence of an image file.
- The Met Collection API (Open Access)Rights field:
isPublicDomain. 1459 matched · 24 examined · 3 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.12 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 2996619 matched · 40 examined · 30 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.10 shown
These figures describe the pass run at 2026-09-03 22:17 UTC, during this request. A completed pass is kept for 24 hours and replayed for an identical search, which is what keeps repeated queries inside Smithsonian’s 30-requests-per-hour allowance. A pass in which either archive failed to answer is never kept — an outage must not be replayed as though it were a finding about the catalogue.
Wikimedia Commons and the Library of Congress are deliberately not wired. Wikimedia was confirmed, on a live query, to return CC-BY material inside the same result set as genuine public domain works, and filtering it safely has not been designed yet. loc.gov was blocked by bot detection during the source evaluation, so its rights vocabulary has never been observed — and nothing here is built on a field nobody has read.
An image file is a rights claim. It never travels without its field.