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 “Poro College, American, 1918 - 1950s” — 58 records examined, 19 dropped by the rights gate.
Archives queried 2026-08-31 23:01 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Study for "A Sunday on La Grande Jatte"
Georges Seurat · 1884
Price list for Poro beauty products
Artist not stated in the record · 1915-1953
Self-Portrait
Anthony van Dyck · ca. 1620–21
Handwritten formula for hair grower
Artist not stated in the record · 1915-1953
Young Ladies of the Village
Gustave Courbet · 1851–52
Receipt for ten dollars from Lucille Brown
Poro College, American, 1918 - 1950s · February 28, 1919
Antoine Dominique Sauveur Aubert (born 1817), the Artist's Uncle, as a Monk
Paul Cézanne · 1866
Price list for dealers of Poro beauty products
Poro College, American, 1918 - 1950s · 1915-1953
Woman with a Parrot
Gustave Courbet · 1866
Letter to Lucille Brown from Annie Malone Pope-Turnbo
Artist not stated in the record · March 25, 1915
The Crucifixion; The Last Judgment
Jan van Eyck · ca. 1436–38
Handwritten formula for pressing oil
Artist not stated in the record · 1915-1953
Portrait of a Man (Self-Portrait?)
Willem Drost · 1653 or 1655
Enrollment Certificate to Poro College for Lucille Brown
Poro College, American, 1918 - 1950s · March 19, 1915
Lady Guildford (Mary Wotton, 1499–1558)
Hans Holbein the Younger
Price list for dealers of Poro products
Poro College, American, 1918 - 1950s · 1915-1953
Price list for dealers of Poro products
Poro College, American, 1918 - 1950s · 1915-1953
Typewritten formula for Poro hair rinse
Poro College, American, 1918 - 1950s · 1915-1953
Photograph of Lucille Brown among Poro agents and one small child
Poro College, American, 1918 - 1950s · 1915-1953
Contract for the Poro System of Hair Treatment and signed pupil agreement
Poro College, American, 1918 - 1950s · 1915
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 · 10 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. 1497797 matched · 40 examined · 9 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 2026-08-31 23:01 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.