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. 19 shown for “Helena de Kay” — 64 records examined, 27 dropped by the rights gate.
Archives queried 2026-08-28 05:46 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Paint box with nude study
Helena de Kay · ca. 1871
Helena Bache
Charles Balthazar Julien Févret de Saint-Mémin, 12 Mar 1770 - 23 Jun 1852 · 1797
Water Lilies
Helena de Kay · ca. 1870–77
Piper archeri Trel. & Yunck.
Artist not stated in the record · 17 Jul 1997
Rubens, Helena Fourment (1614–1673), and Their Son Frans (1633–1678)
Peter Paul Rubens · ca. 1635
Piper calceolarium C. DC.
Artist not stated in the record · 17 Jul 1997
The Marriage Feast at Cana
Juan de Flandes · ca. 1497
Piper lacunosum Kunth
Artist not stated in the record · 17 Jul 1997
Portrait of Susanna Lunden, sister of Helena Fourment
William Elliot · 1763–66
Peperomia acuminata Ruiz & Pav.
Artist not stated in the record · 17 Jul 1997
The Sackville Children
John Hoppner · 1796
Piper archeri Trel. & Yunck.
Artist not stated in the record · 17 Jul 1997
Comtesse de la Châtre (Marie Charlotte Louise Perrette Aglaé Bontemps, 1762–1848)
Elisabeth Louise Vigée Le Brun · 1789
Piper artanthe C. DC.
Artist not stated in the record · 17 Jul 1997
Piper oroense Yunck.
Artist not stated in the record · 17 Jul 1997
Phaseolus coccineus L. subsp. coccineus
Artist not stated in the record · 15 Dec 1987
Mellisuga helenae
Artist not stated in the record · 12 Nov 1901
Campylopus polytrichoides De Not.
Artist not stated in the record · 5 Jul 1970
Euphorbia helenae Urb.
Artist not stated in the record · 14 Mar 1944 to 18 Mar 1944
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. 357 matched · 24 examined · 17 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.7 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 619285 matched · 40 examined · 10 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 2026-08-28 05:46 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.