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. 11 shown for “J. B. Cramer & Co.” — 42 records examined, 31 dropped by the rights gate.
Archives queried 2026-09-04 07:12 UTC · served from cache, not re-queried for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Piano Harmonica
J. B. Cramer & Co. · ca. 1870–96
Lindernia srilankana L.H. Cramer & Philcox
Artist not stated in the record · 7 Jan 1977
Richard L. Cramer, Company I, Fourth Michigan Volunteer Infantry
Mathew B. Brady · 1861
Ceratocephala testiculata (Crantz) Besser
Artist not stated in the record · 17 Apr 1935
Gordonia lasianthus (L.) J. Ellis
Artist not stated in the record · 24 Jun 1959
Gordonia lasianthus (L.) J. Ellis
Artist not stated in the record · 20 Sep 1938
Gordonia lasianthus (L.) J. Ellis
Artist not stated in the record · 16 Jul 1949
Gordonia lasianthus (L.) J. Ellis
Artist not stated in the record · 7 Dec 1919
Gordonia lasianthus (L.) J. Ellis
Artist not stated in the record · 10 Dec 1905
Eragrostis mexicana subsp. virescens (J. Presl) S.D. Koch & Sánchez Vega
Artist not stated in the record · 1 Aug 1948
Cryptonemia seminervis (C. Agardh) J. Agardh
Artist not stated in the record · 9 Nov 1934
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. 2 matched · 2 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.2 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 4436 matched · 40 examined · 31 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.9 shown
These figures describe the pass run at 2026-09-04 07:12 UTC, replayed here rather than repeated. 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.