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 “François Collignon” — 64 records examined, 11 dropped by the rights gate.
Archives queried 2026-08-27 03:26 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
The Queen of Sheba before Solomon
François Collignon · 1631

Album of Prints: Designs for Sculpted Trophies by François Roumier
François Roumier, French, 16..–1748 · 1740-1748

An allegory of painting
François Collignon · 17th century

Jean François Merieult
William Bache, 22 Dec 1771 - 9 Jul 1845 · 1804

The Martyrs of Gorchum
François Collignon · 1630–87

Oeuvres de François de Cuvilliés, fils, Ecole d'architecture Bavaroise, Suite 1-20; 4th Recueil (of François de Cuvilliés, pere et fils; Vue Perspectives; Recueil de Ponts Anciene et Moderne; Nouveau Recuil de Ponts Modern
François de Cuvilliés, fils · 1768–73

The Cottage (La Chaumière)
François Jules Collignon · 1800–50

Album of Prints: Second Series of the Oeuvre of Juste-François Boucher, known as Boucher fils
Juste-François Boucher, French, 1736 – 1782 · 1774

An allegory with Innocent X who is seated on horsback on the right, figures represting Rome in the lowe left
François Collignon · ca.1645–55

Album of Prints: Elementary Album of Architecture by Jean-François de Neufforge, Vol. 8 and a Supplement
Jean-François de Neufforge, Flemish, 1714–1791 · 1757–1772

Saint Peter standing in the centre surrounded by Apostles distraught at the death of Christ who is shown ascending from the tomb in the upper section
François Collignon · 1650–1700

Pierre Francois DuBourg
Charles Balthazar Julien Févret de Saint-Mémin, 12 Mar 1770 - 23 Jun 1852 · 1800

Plate 6: view of a village with a horse trough in center, horses and houses to either side, a church in center background
François Collignon · 1636–61

Distribution du Plan de la Retraitte
François de Cuvilliés the Elder, Belgian, 1695 - 1768 · 1770

Plate 8: a cartouche with the head of an old man at top center, scrollwork to either side, from "Twelve cartouches" (Recueil de douze cartouches)
François Collignon · ca. 1640–45

Mon. Francois Marie Guyol de Guiran
William Bache, 22 Dec 1771 - 9 Jul 1845 · c. 1803-04

Plate 9: a cartouche with the head of a ram at top center, flowers at top left and right, from "Twelve cartouches" (Recueil de douze cartouches)
François Collignon · ca. 1640–45

Album of Prints: Livre de Vases of François Boucher
François Boucher, French, 1703–1770 · 1738-1777

Plate 4: a cartouche with the head of a cherub at top center, leaves and flowers to either side, from "Twelve cartouches" (Recueil de douze cartouches)
François Collignon · ca. 1640–45

Album of Prints: Ornament Designs by Cuvilliés père
François de Cuvilliés the Elder, Belgian, 1695 - 1768 · 1695–1768

Plate 6: a cartouche with a ram skull at top center, grapes and other fruits to either side, from "Twelve cartouches" (Recueil de douze cartouches)
François Collignon · ca. 1640–45

Album of Prints: Various Chinese Figures by François Boucher
François Boucher, French, 1703–1770 · 1738-1745

Plate 7: a cartouche with the mask of an ogre at top center, scrollwork to either side, from "Twelve cartouches" (Recueil de douze cartouches)
François Collignon · ca. 1640–45

Bound print
Germain Boffrand, French, 1667–1754 · 1745
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. 44 matched · 24 examined · 0 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. 8072 matched · 40 examined · 11 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 03:26 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.