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. 23 shown for “World War II Patriotic cover” — 64 records examined, 13 dropped by the rights gate.
Archives queried 2026-08-31 21:42 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 Jabach Family
Charles Le Brun · ca. 1660
WWII military free cover with patriotic cachet
Artist not stated in the record · July 26, 1944
Goblet and Cover (?)
Artist not stated in the record · 700s
World War II Patriotic cover
Artist not stated in the record · November 23, 1944
Charles Maurice de Talleyrand Périgord (1754–1838), Prince de Bénévent
baron François Gérard · 1808
World War II Patriotic cover
Collectors Surplus · January 16, 1945
The Cloisters Apocalypse
Artist not stated in the record · ca. 1330
World War II Patriotic cover
Artist not stated in the record · November 23, 1944
Benjamin Franklin (1706–1790)
Joseph Siffred Duplessis · 1778
World War II Patriotic cover
Artist not stated in the record · October 14, 1942
Joan of Arc
Jules Bastien-Lepage · 1879
World War II Patriotic cover
Artist not stated in the record · September 21, 1942
Armored Cavalryman
Artist not stated in the record · 18th–19th century
World War II Patriotic cover
Artist not stated in the record · July 17, 1942
Smallsword Hilt and Scabbard Mounts
James Morisset · hallmarked for 1797–98
World War II Patriotic cover
Artist not stated in the record · November 24, 1944
Mars and Venus United by Love
Paolo Veronese (Paolo Caliari) · 1570s
World War II Patriotic cover
Artist not stated in the record · November 23, 1944
Don Gaspar de Guzmán (1587–1645), Count-Duke of Olivares
Juan Bautista Martínez del Mazo · ca. 1636 or later
World War II Patriotic cover
Artist not stated in the record · December 2, 1944
Bellona
Rembrandt (Rembrandt van Rijn) · 1633
World War II Patriotic cover
Artist not stated in the record · March 6, 1944
World War II Patriotic cover
Artist not stated in the record · November 28, 1944
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. 113 matched · 24 examined · 13 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.11 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 99187 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 21:42 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.