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 “British Free Frank cover scrap” — 51 records examined, 8 dropped by the rights gate.
Archives queried 2026-09-01 04:03 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Valentine makers' scrapbook
Anonymous, British, 19th century · mid-19th century
British Free Frank cover scrap
Artist not stated in the record · 1831
The Crucifixion; The Last Judgment
Jan van Eyck · ca. 1436–38
British Free Frank cover scrap
Artist not stated in the record · 1835
The Wedding of Stephen Beckingham and Mary Cox
William Hogarth · 1729
British Free Frank folded letter
Artist not stated in the record · 1830
Whalers
Joseph Mallord William Turner · ca. 1845
British Free Frank folded letter
Artist not stated in the record · December 9, 1829
Cobweb Valentine with Morning Glory
Anonymous, British, 19th century · 1840
Free Frank cover
Artist not stated in the record · June 10
The Rest on the Flight into Egypt
Gerard David · ca. 1512–15
Free Frank cover
Artist not stated in the record · 1862
Portrait of a Man, Possibly a Self-Portrait
Velázquez (Diego Rodríguez de Silva y Velázquez) · ca. 1635
Free Frank cover
Artist not stated in the record · July 10, 1913
The Birth of the Virgin
Fra Carnevale (Bartolomeo di Giovanni Corradini) · 1467
Congressional Free Frank cover
Artist not stated in the record · November 21
The Sacrifice of Polyxena
Charles Le Brun · 1647
Post Office Free Frank cover
Artist not stated in the record · June 7, 1861
Juan de Pareja (ca. 1608–1670)
Velázquez (Diego Rodríguez de Silva y Velázquez) · 1650
Congress Free cover
Artist not stated in the record · February 25, 1973
The Natchez
Eugène Delacroix · 1823–24 and 1835
Post Office Free Frank cover
Artist not stated in the record · June 30, 1860
Congressional Free Frank cover
Artist not stated in the record · September 8
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. 11 matched · 11 examined · 0 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. 155940 matched · 40 examined · 8 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 04:03 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.