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 “Folded letter to the General Post Office from R.M.C., January 1808” — 64 records examined, 2 dropped by the rights gate.
Archives queried 2026-08-31 23:02 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
Folded letter to the General Post Office from R.M.C., January 1808
Artist not stated in the record · January 28, 1808
The Love Letter
Jean Honoré Fragonard · early 1770s
Folded letter from Paris office at Rue d' Amsterdam
Artist not stated in the record · January 10, 1871
The Jabach Family
Charles Le Brun · ca. 1660
Letter to Postmaster Dudley Woodbridge from Surveyor General Ebenezer Hazard
Artist not stated in the record · April 6, 1781
The Crucifixion; The Last Judgment
Jan van Eyck · ca. 1436–38
5c Hawaiian Missionary on folded letter
Artist not stated in the record · 1851
The Fortune-Teller
Georges de La Tour · probably 1630s
V-Mail facsimile letter
Artist not stated in the record · April 15, 1943
At the Milliner's
Edgar Degas · 1882
Parcel Post Service Inauguration commemorative trophy cup
Artist not stated in the record · January 1, 1913
Doge Alvise Mocenigo (1507–1577) Presented to the Redeemer
Jacopo Tintoretto (Jacopo Robusti) · probably 1577
Letter of retirement for John T. Jackson
Artist not stated in the record · February 6, 1940
Mantel clock with musical movement
Jean-Baptiste-André Furet · ca. 1784
Transatlantic cover to Birmingham, England
Artist not stated in the record · December 8, 1849
General Étienne-Maurice Gérard (1773–1852)
Jacques Louis David · 1816
V-Mail facsimile letter
Artist not stated in the record · February 24, 1945
The Triumph of Fame; (reverse) Impresa of the Medici Family and Arms of the Medici and Tornabuoni Families
Giovanni di ser Giovanni Guidi (called Scheggia) · ca. 1449
Benjamin Franklin to Mary Hopkinson free franked “B Free Franklin” folded letter
Artist not stated in the record · May 9, 1766
Portrait of a Man, Possibly a Self-Portrait
Velázquez (Diego Rodríguez de Silva y Velázquez) · ca. 1635
Folded Letter
Artist not stated in the record · 1834
The Public Viewing David's "Coronation" at the Louvre
Louis Léopold Boilly · 1810
Letter to Reverend David Selden from his son David Selden
Artist not stated in the record · March 5, 1808
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. 161 matched · 24 examined · 2 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. 1891804 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 2026-08-31 23:02 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.