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. 19 shown for “Confederate cover” — 48 records examined, 1 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.
The "Kearsarge" at Boulogne
Edouard Manet · 1864
letter from Confederate through the lines cover
Artist not stated in the record · June 20, 1861
Photographic Views of Sherman's Campaign
George N. Barnard · 1860s
Confederate Cover
Artist not stated in the record · 1861-1865
Terrific Engagement between the "Monitor" 2 guns, and "Merrimac" 10 guns, in Hampton Roads, March 9th, 1862 – The First Fight Between Ironclad Ships of War
Frances Flora Bond Palmer · 1862
Confederate cover
Artist not stated in the record · 1864
The Evacuation of Fort Sumter
Osborn's Gallery · April 1861
Confederate cover
Artist not stated in the record · 1864
Covered Ways inside the Rebel Fort Mahone, Called by the Soldiers "Fort Damnation," Petersburgh, Virginia
Thomas C. Roche · April 2, 1865
Confederate cover handstamped Paid 10
Artist not stated in the record · February 6, 1862
![[Antietam Battlefield], by Alexander Gardner](/_next/image?url=https%3A%2F%2Fimages.metmuseum.org%2FCRDImages%2Fph%2Fweb-large%2FDP274832.jpg&w=3840&q=75)
[Antietam Battlefield]
Alexander Gardner · 1862
1c Franklin on Confederate cover
Artist not stated in the record · May 25, 1861
Terrific Combat Between the "Monitor" 2 Guns & "Merrimac" 11 Guns – In Hampton Roads March 9th, 1862 – In which the little "Monitor" whipped the "Merrimac" and the whole "School" of Rebel Steamers
Currier & Ives · 1862
5c Jefferson Davis on Confederate cover
Artist not stated in the record · September 10, 1862
3c Washington on Confederate cover
Artist not stated in the record · May 25, 1861
3c Washington on Confederate cover
Artist not stated in the record · May 15, 1861
Confederate cover
Artist not stated in the record · Postmark: March 4, 1861
Confederate cover with U. S. postal issue used after secession
Artist not stated in the record · February 26, 1861
Confederate cover
Artist not stated in the record · April 1, 1861
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. 8 matched · 8 examined · 1 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.7 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 37258 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 23:03 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.