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 “Howard Russell Butler, born New York City 1856-died Princeton, NJ 1934” — 51 records examined, 3 dropped by the rights gate.
Archives queried 2026-09-01 09:37 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
The Crucifixion
Master of the Codex of Saint George · ca. 1330–35
Untitled (Seascape)
Howard Russell Butler, born New York City 1856-died Princeton, NJ 1934
Mezzetin
Antoine Watteau · ca. 1718–20
Untitled (Breaking Wave)
Howard Russell Butler, born New York City 1856-died Princeton, NJ 1934
The Lamentation
Master of the Codex of Saint George · ca. 1330–35
Untitled (Shoreline)
Howard Russell Butler, born New York City 1856-died Princeton, NJ 1934
Circus Sideshow (Parade de cirque)
Georges Seurat · 1887–88
Untitled
Howard Russell Butler, born New York City 1856-died Princeton, NJ 1934
Study for "A Sunday on La Grande Jatte"
Georges Seurat · 1884
Untitled (Shoreline)
Howard Russell Butler, born New York City 1856-died Princeton, NJ 1934
The Card Players
Paul Cézanne · 1890–92
Nude Boy, Torso and Head
Howard Russell Butler, born New York City 1856-died Princeton, NJ 1934
Ia Orana Maria (Hail Mary)
Paul Gauguin · 1891
Untitled (Seascape)
Howard Russell Butler, born New York City 1856-died Princeton, NJ 1934
The Crucifixion; The Last Judgment
Jan van Eyck · ca. 1436–38
Untitled (Seashore)
Howard Russell Butler, born New York City 1856-died Princeton, NJ 1934
Untitled
Howard Russell Butler, born New York City 1856-died Princeton, NJ 1934
Untitled
Howard Russell Butler, born New York City 1856-died Princeton, NJ 1934
Untitled (Shoreline)
Howard Russell Butler, born New York City 1856-died Princeton, NJ 1934
Untitled (Cliffs)
Howard Russell Butler, born New York City 1856-died Princeton, NJ 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. 11 matched · 11 examined · 3 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.8 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 59 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 09:37 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.