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. 20 shown for “English Grammar” — 58 records examined, 33 dropped by the rights gate.
Archives queried 2026-09-03 13:53 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Allegorical Figure Representing Grammar
Giovanni Battista Tiepolo · 1760
English Grammar
Artist not stated in the record
Nan va Halva (Breads and Sweets)
Muhammad Baha' al-Din al-'Amili · ca. 1690
The Institutes of English Grammar
Artist not stated in the record · 1867
Virgin and Child Attended by Angels
Filippino Lippi · 1457/58–1504
Vignettes for a Latin Grammar
Artist not stated in the record · 1779
Allegorical Figure Representing Geometry
Giovanni Battista Tiepolo · 1760
The English Reader
Murray, Lindley
Allegorical Figure Representing Arithmetic
Giovanni Battista Tiepolo · 1760
A Grammar of Geography
Artist not stated in the record
Allegorical Figure Representing Metaphysics
Giovanni Battista Tiepolo · 1760
Grammar School, Huntingdon
Ernest Clifford Peixotto, American, 1869–1940 · 1899
Allegorical Figure Representing America
Giovanni Domenico Tiepolo
The New Geographical Grammar
Artist not stated in the record
Curtain of "Sultan" textile
Owen Jones · 1870–74
Pellaea mucronata (D.C. Eaton) D.C. Eaton
Artist not stated in the record · 28 Jan 1950
Allegorical Figure Representing Africa
Giovanni Domenico Tiepolo
Allegorical Figure Representing Asia
Giovanni Domenico Tiepolo
Allegorical Figure Representing Europe
Giovanni Domenico Tiepolo
Allegorical Figures Representing Virtue and Abundance
Giovanni Battista Tiepolo · 1760
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. 18 matched · 18 examined · 1 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. 5894 matched · 40 examined · 32 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.8 shown
These figures describe the pass run at 2026-09-03 13:53 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.