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. 24 shown for “Léopold Flameng” — 64 records examined, 17 dropped by the rights gate.
Archives queried 2026-08-27 08:33 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Portrait of Comtesse A. Thibaudeau
Léopold Flameng · 1868

Self Portrait as a Cavalier
Artist not stated in the record · ca. 1870

Portrait of a German Lady
Léopold Flameng · 1850–1911

View of Amsterdam
Artist not stated in the record · ca. 1865

Portrait of Meryon Sitting up in Bed
Léopold Flameng · 1858

Mrs. Adeline M. Noble
François Flameng, French, born Paris, France 1856-died Paris, France 1923 · 1903

Les Pillards
Léopold Flameng · 1853

Saint Cloud--4 Juin 1906
François Flameng, French, born Paris, France 1856-died Paris, France 1923 · 1906

Le Jardinier du Couvent, plate 3 from "The Decameron"
Léopold Flameng · 1873

Leopold Stokowski
Ralph Barton, 14 Aug 1891 - 19 May 1931 · 1931

La Vengeance du Philosophe Amoureux, plate 8 from "The Decameron"
Léopold Flameng · 1873

Leopold Damrosch
Frederich Graetz, c. 1840 - c. 1913 · 1885

L'Enfer des Beautés Cruelles, plate 5 from "The Decameron"
Léopold Flameng · 1873

Skippet and cover with seal of Leopold II
Artist not stated in the record · 1790–92

Le Péché Partagé, plate 1 from "The Decameron"
Léopold Flameng · 1873

Leopold Kahn
Artist not stated in the record · c. 1860-70

Jean Boccace, frontispiece from "The Decameron"
Léopold Flameng · 1873

Leopold Kahn
Artist not stated in the record · c. 1860-70

La Rouerie de Dame Simone, plate 7 from "The Decameron"
Léopold Flameng · 1873

Leopold Kahn
Artist not stated in the record · c. 1860-70

Le Cordelier de Venise, plate 4 from "The Decameron"
Léopold Flameng · 1873

Leopold Kahn
Artist not stated in the record · c. 1860-70

Le Bain, plate 6 from "The Decameron"
Léopold Flameng · 1873

Leopold Kahn
Artist not stated in the record · c. 1860-70
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. 40 matched · 24 examined · 2 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. 1340 matched · 40 examined · 15 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 2026-08-27 08:33 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.