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. 24 shown for “Photograph of airmail plane Curtiss JN-4H” — 43 records examined, 5 dropped by the rights gate.
Archives queried 2026-09-01 13:33 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
The Adoration of the Shepherds
Andrea Mantegna · shortly after 1450
Photograph of airmail plane Curtiss JN-4H
Artist not stated in the record · May 15, 1918
Virgin and Child with Saints Catherine of Alexandria and Barbara
Hans Memling · early 1480s
Photograph of airmail plane on take off
Artist not stated in the record · May 15, 1918
Virgin and Child in a Niche
Jan van Eyck · ca. 1440–50
Photograph of airmail plane wreckage
Artist not stated in the record · 1918
Young Man Holding a Book
Master of the View of Saint Gudula · ca. 1480
Photograph of airmail planes at Washington, DC
Artist not stated in the record · 1918
The Adoration of the Magi
Joos van Wassenhove · 1472–74
Photograph of airmail pilot Eddie Gardner and airplane
Artist not stated in the record · 1918
Boating
Edouard Manet · 1874
Photograph of airmail pilot Eddie Gardner
Artist not stated in the record · 1918
The Harvesters
Pieter Bruegel the Elder · 1565
Photograph of airmail pilot Eddie Gardner
Artist not stated in the record · August 1918
The Burial of Saint Wenceslas
Master of Eggenburg · ca. 1490–1500
Photograph of airmail pilot Lt. James Edgerton and sister
Artist not stated in the record · May 18, 1918
Chrysanthemums in the Garden at Petit-Gennevilliers
Gustave Caillebotte · 1893
Curtiss JN-4H model
Artist not stated in the record · 1918-1919
Sebastián Martínez y Pérez (1747–1800)
Goya (Francisco de Goya y Lucientes) · 1792
Curtiss JN-4H model
Artist not stated in the record · 1918-1919
Mont Sainte-Victoire and the Viaduct of the Arc River Valley
Paul Cézanne · 1882–85
Photograph of Army pilot Lt. Torrey Webb on first day of airmail service
Artist not stated in the record · May 15, 1918
Saint Adalbert and Saint Procopius
Master of Eggenburg · ca. 1490–1500
Photograph of Army Air Corps pilots Maj. Reuben Fleet and Lt. George Boyle
Artist not stated in the record · May 15, 1918
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. 52 matched · 24 examined · 5 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.12 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 19 matched · 19 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 13:33 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.