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 planes at Cleveland, Ohio” — 64 records examined, 8 dropped by the rights gate.
Archives queried 2026-09-01 15:59 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Cathedral, Milan
Otto Henry Bacher · 1886
Photograph of airmail planes at Cleveland, Ohio
Artist not stated in the record · 1921
Boating
Edouard Manet · 1874
Photograph of airmail pilot Paul Collins and bag of first overnight airmail
Artist not stated in the record · July 1, 1925
Virgin and Child in a Niche
Jan van Eyck · ca. 1440–50
Photograph of airmail pilot Shirley J. Short
Artist not stated in the record · c. 1921
The Harvesters
Pieter Bruegel the Elder · 1565
Photograph of airmail being loaded in New Brunswick, New Jersey
Artist not stated in the record · July 1, 1925
The Nativity
Gerard David · early 1480s
Telegram to Benjamin Lipsner
Artist not stated in the record · September 4, 1918
Arachne
Otto Henry Bacher · 1884
Photograph of airmail pilot Warren D. Williams
Artist not stated in the record · c. 1921
Circus Sideshow (Parade de cirque)
Georges Seurat · 1887–88
Photograph of airmail hanger at Iowa City, Iowa
Artist not stated in the record · 1921
Allegory of Music
Laurent de La Hyre · 1649
Photograph of airmail pilot Earl F. Ward
Artist not stated in the record · c. 1924
Madame Georges Charpentier (Marguerite-Louise Lemonnier, 1848–1904) and Her Children, Georgette-Berthe (1872–1945) and Paul-Emile-Charles (1875–1895)
Auguste Renoir · 1878
Photograph of airmail pilot Lloyd Bertaud
Artist not stated in the record · c. 1924
The Annunciation
Petrus Christus · ca. 1445
Photograph of airmail pilot Arthur Roy Smith
Artist not stated in the record · c. 1924
The Collector of Prints
Edgar Degas · 1866
Telegram from Gerston on September 5, 1918
Artist not stated in the record · September 15, 1918
Flora
Rembrandt (Rembrandt van Rijn) · ca. 1654
Pilot Max Miller's log book
Artist not stated in the record · November 11, 1919 - August 27, 1920
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. 26 matched · 24 examined · 8 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. 2971873 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 15:59 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.