Two 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. 24 shown for “John Burger” — 64 records examined, 18 dropped by the rights gate.
Archives queried 2026-08-27 12:56 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Table Spoon
John Burger · 1780–1800

Sorocea trophoides W.C. Burger
Artist not stated in the record · 6 Jul 1994

Ladle
John Burger · 1790–1800

Sorocea trophoides W.C. Burger
Artist not stated in the record · 30 Jun 1994

Spoon
John Burger · ca. 1800

Sorocea trophoides W.C. Burger
Artist not stated in the record · 8 Jul 1994

Spoon
John Burger · 1770–1800

Sorocea trophoides W.C. Burger
Artist not stated in the record · 8 Jul 1994

A Banquet
Dirck Hals · 1628

Gonzalagunia stenostachya (Standl.) W.C. Burger
Artist not stated in the record · 5 Aug 1972

A Hare and Birds
Jan Fyt

Sorocea guayanensis W.C. Burger
Artist not stated in the record · 15 Jul 1959

A Basket and Birds
Jan Fyt

Persea povedae W.C. Burger
Artist not stated in the record · 19 Feb 1997

Man in Armor (Mars?)
Rembrandt

Ocotea valeriana (Standl.) W.C. Burger
Artist not stated in the record · 27 Mar 1989

Christ Appearing to His Mother
Juan de Flandes · ca. 1496

Hedyosmum costaricense C.E. Wood ex W.C. Burger
Artist not stated in the record · 29 Dec 1974

The Adoration of the Magi
Quinten Massys · 1526

Persea povedae W.C. Burger
Artist not stated in the record · 19 Feb 1997

Saints Peter, Martha, Mary Magdalen, and Leonard
Correggio (Antonio Allegri) · ca. 1515

Chione sylvicola (Standl.) W.C. Burger
Artist not stated in the record · 30 Jun 1994

Stirrup-spout bottle
Cupisnique artist(s) · 800–500 BCE

Peperomia austin-smithii W.C. Burger
Artist not stated in the record · 29 Dec 1974
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. 88 matched · 24 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. 264323 matched · 40 examined · 17 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 2026-08-27 12:56 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.