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 “1c Franklin Treasury Department card plate proof” — 44 records examined, 0 dropped by the rights gate.
Archives queried 2026-09-01 04:04 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
King Arthur (from the Heroes Tapestries)
Artist not stated in the record · ca. 1400–1410
1c Franklin Treasury Department card plate proof
Artist not stated in the record · 1879-1894
Julius Caesar (from the Heroes Tapestries)
Artist not stated in the record · ca. 1400–1410
1c Franklin Treasury Department card plate proof
Artist not stated in the record · 1893
Studies for the Libyan Sibyl (recto); Studies for the Libyan Sibyl and a small Sketch for a Seated Figure (verso)
Michelangelo Buonarroti · ca. 1510–11
1c Franklin plate proof single
Artist not stated in the record · 1873
The Hours of Jeanne d'Evreux, Queen of France
Jean Pucelle · ca. 1324–28
1c Franklin Justice Department card plate proof
Artist not stated in the record · 1879-1894
1c Franklin War Department card plate proof
Artist not stated in the record · 1879-1894
1c Franklin Navy Department card plate proof
Artist not stated in the record · 1879-1894
1c Franklin Interior Department card plate proof
Artist not stated in the record · 1879-1894
1c Franklin State Department card plate proof
Artist not stated in the record · 1879-1894
1c Franklin Agriculture Department card plate proof
Artist not stated in the record · 1879-1894
1c Franklin reprint cardboard plate proof pane
Artist not stated in the record · 1875
1c Franklin plate proof
Post Office Department, (1792-1971) · November 30, 1910
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 · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.4 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 691467 matched · 40 examined · 0 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 04:04 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.