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 “Transatlantic cover to Londonderry, Ireland” — 43 records examined, 12 dropped by the rights gate.
Archives queried 2026-08-28 22:17 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Elizabeth Farren (born about 1759, died 1829), Later Countess of Derby
Sir Thomas Lawrence · 1790
Transatlantic cover to Londonderry, Ireland
Artist not stated in the record · 1856
The Visit to the Nursery
Gabriël Metsu · 1661
Pica pica pica
Artist not stated in the record · 1845
A Maid Asleep
Johannes Vermeer · ca. 1656–57
Phyllostachys castillonis
Artist not stated in the record · 15 May 1949
Amelia Earhart
Underwood & Underwood, active 1880 - c. 1940s · 1932
Atriplex hastata L.
Artist not stated in the record · Sep 1846
Transatlantic cover to London
Artist not stated in the record · December 9, 1865
Amelia Earhart's flight suit
Arnold, Constable & Company · c. 1928
Letter from inside Charles Lindbergh transatlantic flight cover
Artist not stated in the record · May 16, 1927
Transatlantic cover to Madrid, Spain
Artist not stated in the record · December 18, 1876
2c Andrew Jackson pair on transatlantic cover
Artist not stated in the record · June 18, 1875
Transatlantic Cover to Nagasaki, Japan
Artist not stated in the record · 1867
Transatlantic Cover to New York
Artist not stated in the record · 1847
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. 3 matched · 3 examined · 0 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. 951206 matched · 40 examined · 12 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 22:17 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.