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. 15 shown for “Caspar Gras” — 44 records examined, 22 dropped by the rights gate.
Archives queried 2026-08-28 07:39 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Mortar with Animal Frieze
Caspar Gras · 1603
Caspar Wistar
Pendleton Lithography Company, active c. 1825 - 1836 · 1828
Monkey fountain figure
Caspar Gras · ca. 1600
Dr. Caspar Wistar Pennock
Auguste Edouart, 1788 - 1861 · 1843
The Interior of a Woman Painter's Studio
Marie Victoire Lemoine · 1789
Picea sitchensis (Bong.) Carrière
Artist not stated in the record · 22 Dec 2004
Title Page "Calligraphia Latina," in Dissertatio epistolaris de calligraphiae nomenclatione...
Johann Caspar Schwab, German, 1727 - after 1810 · 1756
Pertusaria subpupillaris Vezda
Artist not stated in the record · 25 Jul 1961
Salix hookeriana Barratt ex Hook.
Artist not stated in the record · 10 May 1931
Albums of Prints: German Rocaille Designs
Caspar-Gottlieb Eisler, German, active 1707–1755 · 18th century
Portrait of Caspar Nemins, Bishop of Antwerp
Artist not stated in the record · ca. 1700-1730
Digitaria ischaemum (Schreber) Schreber ex Muhl.
Artist not stated in the record · 7 Sep 1938
Helianthus pumilis Nutt.
Artist not stated in the record · 12 Aug 1892
Symphoricarpos vaccinioides Rydb.
Artist not stated in the record · 26 Jul 1894
Sympetrum pallipes
Artist not stated in the record · 27 Aug 1937
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. 4 matched · 4 examined · 1 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.3 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 500 matched · 40 examined · 21 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 07:39 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.