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. 22 shown for “Union Cover” — 64 records examined, 8 dropped by the rights gate.
Archives queried 2026-09-01 01:04 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Century Vase
Karl L. H. Müller · 1877
Union Cover
Artist not stated in the record · 1863
Partial tea set (teapot, sugar bowl, cream pitcher, slop bowl)
Union Porcelain Works · 1876
Union Cover
Artist not stated in the record · 1861
Jardinière
Union Porcelain Works · 1876
3c Washington on Union cover
Artist not stated in the record · 1862
Pilgrim vase
Union Porcelain Works · 1876
Union Cover
Artist not stated in the record · 1861
Union Pipe
J. Sharp · early 19th century
Union patriotic cover
Artist not stated in the record · May 18, 1861
Album of Tournaments and Parades in Nuremberg
Artist not stated in the record · late 16th–mid-17th century
Union Cover
Artist not stated in the record · 1861
A Collection of Etchings and Engravings in Imitation of Drawings from Various Old Masters, Being Facsimiles of Their Respective Performances, Chiefly by Arthur Pond, & Charles Knapton, London 1734 &c,
Arthur Pond · 1732–69
Union Patriotic cover
Artist not stated in the record · 1861-1865
Covered Vegetable Dish
Union Porcelain Works · 1885
Union Cover
Artist not stated in the record · 1864
Union through the lines cover
Artist not stated in the record · 1863
Covered Vegetable Dish
Union Porcelain Works · 1885
Union Cover
Artist not stated in the record · 1861-1865
Canopy for a bed
Artist not stated in the record · early 18th century
Union Patriotic Cover
Artist not stated in the record · 1861-1865
Union 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. 146 matched · 24 examined · 8 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. 54695 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 01:04 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.