OpenTwo 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. 21 shown for “Pierre Henri de Valenciennes” — 64 records examined, 19 dropped by the rights gate.
Archives queried 2026-08-31 18:22 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 Banks of the Rance, Brittany
Pierre Henri de Valenciennes · possibly 1785
Galerie métallique des grands hommes français (Great Men of France)
Pierre Joseph Demongé Chardigny, French, 1794 - 1866 · 1823
Study of a Tree in the Luxembourg Gardens
Pierre Henri de Valenciennes · 1773
Micropholis crotonoides (Pierre) Pierre
Artist not stated in the record · 9 Jan 1948
Classical Landscape with Women at a Fountain
Pierre Henri de Valenciennes · n.d.
Album of Prints: Different Works by LaLonde, Decorator and Designer, Part II, as well as works by Henri Sallembier
Richard de Lalonde, French, active 1780–96 · ca. 1780
Mezzetin
Antoine Watteau · ca. 1718–20
Alternanthera flavogrisea Urb.
Artist not stated in the record · 13 Aug 1942
The French Comedians
Antoine Watteau · ca. 1720
Aciotis acuminifolia (Mart. ex DC.) Triana
Artist not stated in the record · 31 Jul 1942
View on the Quirinal Hill, Rome
Simon Denis · 1800
Coffea canephora Pierre ex A. Cunn.
Artist not stated in the record · 10 Nov 1936
Pierre de Maridat
I. Josias Belle · 1656
Coffea canephora Pierre ex A. Cunn.
Artist not stated in the record · 10 Nov 1936
Portrait of Pierre-Henri de Valenciennes
Augustin de Saint-Aubin · 1788
Magnolia champaca (L.) Baill. ex Pierre
Artist not stated in the record · 12 Jul 1935
Troops at Rest
Jean-Baptiste Joseph Pater · ca. 1725
Xerospermum macrophyllum Pierre
Artist not stated in the record · May 1867
Wulffia baccata (L. f.) Kuntze
Artist not stated in the record · 21 Jun 1940
Charianthus corymbosus (Rich.) Cogn.
Artist not stated in the record · 9 Feb 1940
Wulffia baccata (L. f.) Kuntze
Artist not stated in the record · 21 Jun 1940
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. 886 matched · 24 examined · 15 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.9 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 728664 matched · 40 examined · 4 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 2026-08-31 18:22 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.