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. 21 shown for “Carte-de-visite portrait of Agnes and Slocum Howland” — 50 records examined, 1 dropped by the rights gate.
Archives queried 2026-09-01 16:01 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Juan de Pareja (ca. 1608–1670)
Velázquez (Diego Rodríguez de Silva y Velázquez) · 1650
Carte-de-visite portrait of Agnes and Slocum Howland
Artist not stated in the record · ca. 1875
Still Life with Apples and a Pot of Primroses
Paul Cézanne · ca. 1890
Henry Warner Slocum
Mathew Brady Studio, active 1844 - 1894 · c. 1864
Virgin and Child with Saint Anne
Albrecht Dürer · probably 1519
Carte-de-visite portrait of Isabel and Herbert Howland
Artist not stated in the record · ca. 1870
A Woman Seated beside a Vase of Flowers (Madame Paul Valpinçon?)
Edgar Degas · 1865
Carte-de-visite portrait of Margaret Alsop
Artist not stated in the record · ca. 1865
Joséphine-Éléonore-Marie-Pauline de Galard de Brassac de Béarn (1825–1860), Princesse de Broglie
Jean Auguste Dominique Ingres · 1851–53
Carte-de-visite portrait of William Henry Channing
Artist not stated in the record · 1862-1865
The Baptism of Christ
Sebastiano Ricci · ca. 1713–14
Carte-de-visite portrait of Walter W. Johnson
Artist not stated in the record · 1868
The Glorification of the Eucharist
Peter Paul Rubens · ca. 1630–32
Carte-de-visite portrait of Harold M. White
Artist not stated in the record · 1860-1862
The Singer in Green
Edgar Degas · ca. 1884
Carte-de-visite portrait of Emperor Maximilian
Artist not stated in the record · 1864; printed later
Doge Andrea Gritti (1455–1538)
Titian
Carte-de-visite portrait of Eugene Dowe
Artist not stated in the record · ca. 1865
Carte-de-visite portrait of Mary Ann Donaldson
Artist not stated in the record · 1875
Carte-de-visite portrait of Miss Thiele
Artist not stated in the record · ca. 1865
Carte-de-visite portrait of Mary Shriner
Artist not stated in the record · 1860-1866
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. 10 matched · 10 examined · 1 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.9 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 986 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 16:01 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.