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 “25c Black on Pink Paper Adams & Co.'s Express Single” — 64 records examined, 18 dropped by the rights gate.
Archives queried 2026-08-31 19:54 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 Rehearsal of the Ballet Onstage
Edgar Degas · ca. 1874
25c Black on Pink Paper Adams & Co.'s Express Single
Artist not stated in the record · 1854
Circus Sideshow (Parade de cirque)
Georges Seurat · 1887–88
2c Black on Buff Paper Adams' City Express Post Single
Artist not stated in the record · 1850-1851
The Forest in Winter at Sunset
Théodore Rousseau · ca. 1846–67
5c Documentary Express revenue stamp single on Adams Express Company’s receipt
Artist not stated in the record · February 6, 1863
Portrait of a Carthusian
Petrus Christus · 1446
Ceiling paper
Carey Bros. W.P. Mfg. Co., Philadelphia, Pennsylvania, founded 1882 · 1905–1915
The Adoration of the Magi
Joos van Wassenhove · 1472–74
Frieze
York Wall Paper Company, 1895 · 1905–1915
Ia Orana Maria (Hail Mary)
Paul Gauguin · 1891
Black shawl with pink fringe
Unidentified · 1980s
Virgin and Child with Four Angels
Gerard David · ca. 1510–15
25c single letter rate more than 400 miles Arkansas Territory stampless cover
Artist not stated in the record · March 3, 1832
Hermann von Wedigh III (died 1560)
Hans Holbein the Younger · 1532
5c Petersburg, VA Confederate postmaster provisional single on cover
Artist not stated in the record · March 5, 1862
Benedikt von Hertenstein (born about 1495, died 1522)
Hans Holbein the Younger · 1517
Express from Richmond to Louisville posted to New York cover
Artist not stated in the record · August 8, 1861
The Penitence of Saint Jerome
Joachim Patinir · ca. 1515
Sidewall
Crossler and Wilt Wallpaper Co. · 1890–95
Jacob Willemsz van Veen (1456–1535), the Artist's Father
Maarten van Heemskerck · 1532
Pink floral drop waist dress with belt and fabric scrap
Unidentified · late 1920s
Antoine Laurent Lavoisier (1743–1794) and Marie Anne Lavoisier (Marie Anne Pierrette Paulze, 1758–1836)
Jacques Louis David · 1788
Red collared dress with pink lining
Gunter Project 2, German, 1968 - 1979 · 1960s
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. 24 matched · 24 examined · 1 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. 1912732 matched · 40 examined · 17 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 2026-08-31 19:54 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.