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 “Civil War Cover” — 64 records examined, 7 dropped by the rights gate.
Archives queried 2026-08-31 23:03 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Seated figure
Middle Niger artist · 13th century
"Rose of Washington" Civil War Union patriotic cover
Artist not stated in the record · 1863
Codice civile generale austriaco
Luigi Lodigiani · 1815
Confederate folded letter
Artist not stated in the record · 1864
Cup with cover
Artist not stated in the record · ca. 1650–60
Union Prisoner-of-War Cover
Artist not stated in the record · October 23, 1863
War Hat
Artist not stated in the record · late 15th century
Union Cover
Artist not stated in the record · 1861
War Mask
Artist not stated in the record · 14th–16th century
Confederate Civil War cover
Artist not stated in the record · February 1, 1864
Civil War
Edouard Manet · 1871–73 [published 1874]
Confederate Civil War cover
Artist not stated in the record · February 22, 1862
Book of Prayers, Surat al-Yasin and Surat al-Fath
Ahmad Nairizi · dated 1132 AH/1719–20 CE
"Map of Washington" Union patriotic cover
Artist not stated in the record · 1861
Photographic Views of Sherman's Campaign
George N. Barnard · 1860s
Civil War Cover
Artist not stated in the record · February 16, 1861
A Bit of War History: The Veteran
Thomas Waterman Wood · 1866
"Rose of Washington" cover insert
Artist not stated in the record · c. 1863
A Bit of War History: The Recruit
Thomas Waterman Wood · 1866
"Rose of Washington" cover insert
Artist not stated in the record · 1863
A Bit of War History: The Contraband
Thomas Waterman Wood · 1865
Union prisoner of war cover
Artist not stated in the record · May 22, 1865
The Forest in Winter at Sunset
Théodore Rousseau · ca. 1846–67
Confederate Civil War Patriotic cover
Artist not stated in the record · 1861-1865
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. 1818 matched · 24 examined · 6 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. 78397 matched · 40 examined · 1 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 23:03 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.