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. 12 shown for “Adolphe Mouilleron, French, born Paris, France 1820-died Paris, France 1881” — 24 records examined, 4 dropped by the rights gate.
Archives queried 2026-08-27 03:30 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.Smithsonian Open Access: HTTP 429 from api.si.edu. Results from the remaining archive are shown unchanged — nothing is substituted for a source that did not answer.

Mantel clock with musical movement
Jean-Baptiste-André Furet · ca. 1784

The Little Fourteen-Year-Old Dancer
Edgar Degas · modeled 1881, cast 1922, modern tutu

An Egyptian Peasant Woman and Her Child
Léon Bonnat · 1869–70

The Rehearsal of the Ballet Onstage
Edgar Degas · ca. 1874

Joan of Arc
Jules Bastien-Lepage · 1879

Mace Made for Henry II of France
Diego de Caias · ca. 1540

Boating
Edouard Manet · 1874

James-Jacques-Joseph Tissot (1836–1902)
Edgar Degas · ca. 1867–68

Tommaso di Folco Portinari (1428–1501); Maria Portinari (Maria Maddalena Baroncelli, born 1456)
Hans Memling · ca. 1470

Hagar in the Wilderness
Camille Corot · 1835

The Death of Socrates
Jacques Louis David · 1787

The Forest in Winter at Sunset
Théodore Rousseau · ca. 1846–67
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. 241 matched · 24 examined · 4 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. HTTP 429 from api.si.edu. No records from this archive are shown for this query.Unavailable
These figures describe the pass run at 2026-08-27 03:30 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.