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. 14 shown for “George Kasson Knapp, 1833 - 1910” — 42 records examined, 16 dropped by the rights gate.
Archives queried 2026-09-01 03:50 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Le Bouffon - Le Salon de 1868
Edward Ancourt · May 10, 1868
Charles Loring Elliott
George Kasson Knapp, 1833 - 1910 · 1877
The Triumph of Fame; (reverse) Impresa of the Medici Family and Arms of the Medici and Tornabuoni Families
Giovanni di ser Giovanni Guidi (called Scheggia) · ca. 1449
Solanum smithii S. Knapp
Artist not stated in the record · 26 Sep 1918
Sambucus canadensis L.
Artist not stated in the record · 11 Jun 1951
Gaultheria procumbens L.
Artist not stated in the record · 8 Jun 1951
Rhus glabra L.
Artist not stated in the record · 11 Jun 1951
Podophyllum peltatum L.
Artist not stated in the record · 6 May 1951
Stellaria pubera Michx.
Artist not stated in the record · 22 Apr 1951
Trifolium hybridum L.
Artist not stated in the record · 4 Jun 1951
Geranium maculatum L.
Artist not stated in the record · 6 May 1951
Potentilla canadensis L.
Artist not stated in the record · 9 May 1951
Rosa virginiana Mill.
Artist not stated in the record · 13 Jun 1951
Robinia pseudoacacia L.
Artist not stated in the record · 11 Jun 1951
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. 2 matched · 2 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.2 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 651471 matched · 40 examined · 16 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 2026-09-01 03:50 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.