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. 23 shown for “St. Margarets, Westminster, from "Ackermann's Repository"” — 51 records examined, 1 dropped by the rights gate.
Archives queried 2026-09-04 09:04 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
St. Margaret's Westminster
Thomas Rowlandson · August 1, 1809

St. Margarets, Westminster, from "Ackermann's Repository"
Artist not stated in the record · 1809

Covent Garden Market, Westminster Election
Thomas Rowlandson · July 1, 1808

Westminster Abbey, from "Ackermann's Repository"
Artist not stated in the record · 1809

Covent Garden Market, Westminster Election
Thomas Rowlandson · July 1, 1808

Westminster Hall, from "Ackermann's Repository"
Artist not stated in the record · 1809

Court of Kings Bench, Westminster Hall
Thomas Rowlandson · 1808

View of Westminster Hall and Bridge, from "Ackermann's Repository"
Artist not stated in the record · 1810

Court of Common Pleas, Westminster Hall
Thomas Rowlandson · June 1, 1808

Convent Garden Marker, from "Ackermann's Repository"
Artist not stated in the record · 1808

A Genealogical History of the Kings of England, and Monarchs of Great Britain, &c. From the Conquest, Anno 1066, to the Year 1677
Francis Sandford · 1677

St. Paul's Cathedral, from "Ackermann's Repository"
Artist not stated in the record · 1809

The College of Physicians
Thomas Rowlandson · May 1, 1808

St. Martins, in the Fields, from "Ackermann's Repository"
Artist not stated in the record · 1809

Don Gaspar de Guzmán (1587–1645), Count-Duke of Olivares
Juan Bautista Martínez del Mazo · ca. 1636 or later

St. Stephan's Walbrook, from "Ackermann's Repository"
Artist not stated in the record · 1809

The Hours of Jeanne d'Evreux, Queen of France
Jean Pucelle · ca. 1324–28

Workhouse, St. James Parish, from "Ackermann's Repository"
Artist not stated in the record · 1809

A Woman Seated beside a Vase of Flowers (Madame Paul Valpinçon?)
Edgar Degas · 1865

St. Luke's Hospital, from "Ackermann's Repository"
Artist not stated in the record · 1809

Mourning Britannia
Saint James's Factory · 1751

Drawing Room St. James's, from "Ackermann's Repository"
Artist not stated in the record · 1809

Watch House, St. Mary le Bone, from "Ackermann's Repository"
Artist not stated in the record · 1809
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. 11 matched · 11 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.11 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 528530 matched · 40 examined · 1 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.12 shown
These figures describe the pass run at 2026-09-04 09:04 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.