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. 18 shown for “Kneeland, J. C.” — 64 records examined, 22 dropped by the rights gate.
Archives queried 2026-09-05 22:20 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Jagdhorn in G
Jacob Schmidt · ca. 1710–20
Patent Model of a Platen Printing Press
Kneeland, J. C. · ca 1845
Carpet with Palm Trees, Ibexes, and Birds
Artist not stated in the record · late 16th–early 17th century
Epilobium brachycarpum C. Presl
Artist not stated in the record · 31 Jul 1909
Powder Horn
Artist not stated in the record · dated 1759
Epilobium brachycarpum C. Presl
Artist not stated in the record · 26 Jul 1912
Sprite
Donatello · 1432
Dichodontium cirrhata
Artist not stated in the record · 19 Jul 1980
Vase with lid (one of a pair)
C. J. Mason and Co. · ca. 1826–45
Orthodicranum strictum Broth.
Artist not stated in the record · 19 Jul 1980
Dicranum scoparium Hedw.
Artist not stated in the record · 19 Jul 1980
Landscapes after historical painters
Yun Xiang · datable to 1638 or 1650
Bromus sterilis L.
Artist not stated in the record · 30 May 1921
Scutellaria antirrhinoides Benth.
Artist not stated in the record · 26 Jul 1912
Silene californica Durand
Artist not stated in the record · 31 Jul 1909
Mimulus guttatus DC.
Artist not stated in the record · 26 Jul 1912
Collinsia grandiflora Lindl.
Artist not stated in the record · 8 Jun 1908
Penstemon rattani A. Gray
Artist not stated in the record · 10 Jun 1906
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. 9991 matched · 24 examined · 17 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. 1994785 matched · 40 examined · 5 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 2026-09-05 22:20 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.