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 “Free frank cover and folded letter” — 64 records examined, 2 dropped by the rights gate.
Archives queried 2026-09-01 01:49 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 Love Letter
Jean Honoré Fragonard · early 1770s
Free frank cover and folded letter
Artist not stated in the record · May 15, 1848
Christ and the Adulteress
Lucas Cranach the Younger and Workshop · ca. 1545–50
British Free Frank folded letter
Artist not stated in the record · 1830
Christ Blessing the Children
Lucas Cranach the Younger and Workshop · ca. 1545–50
British Free Frank folded letter
Artist not stated in the record · December 9, 1829
Mantel clock with musical movement
Jean-Baptiste-André Furet · ca. 1784
Letter enclosed in Benjamin Franklin free frank cover
Artist not stated in the record · April 13, 1765
The Rest on the Flight into Egypt
Gerard David · ca. 1512–15
Benjamin Franklin free frank cover
Artist not stated in the record · April 13, 1765
Letters to Fang Shiguan
Bada Shanren (Zhu Da) · datable to ca. 1688–1705
Stampless Cover
Artist not stated in the record · c. 1836
Boy with a Sword
Edouard Manet · 1861
Benjamin Franklin to Mary Hopkinson free franked “B Free Franklin” folded letter
Artist not stated in the record · May 9, 1766
Madonna and Child Enthroned with Two Angels
Fra Filippo Lippi · ca. 1440
Letter to Postmaster Dudley Woodbridge from Surveyor General Ebenezer Hazard
Artist not stated in the record · April 6, 1781
Moses and Aaron before Pharaoh: An Allegory of the Dinteville Family
Master of the Dinteville Allegory · 1537
37.5c double War of 1812 letter rate for 90-150 miles forwarded stampless cover
Artist not stated in the record · 1815
Madonna and Child
Duccio di Buoninsegna · ca. 1290–1300
George Washington to Anne Louise DuBarry franked "President U.S." folded letter
Artist not stated in the record · August 1796
Album of Tournaments and Parades in Nuremberg
Artist not stated in the record · late 16th–mid-17th century
Free Frank cover
Artist not stated in the record · June 10
Teakettle and spirit lamp with stand
Paul de Lamerie · 1744/45
Post Office Free Frank cover
Artist not stated in the record · June 30, 1860
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. 292 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. 1508670 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 01:49 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.