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. 23 shown for “Pair of Curtains” — 64 records examined, 31 dropped by the rights gate.
Archives queried 2026-08-29 07:42 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Bookcase (one of a pair)
Niccolo Michetti · ca. 1715

Curtain panels
Artist not stated in the record · 19th century

Curtain paper
Jeffrey & Co., 1836–1930 London, England · 1872

Pair of curtains
Artist not stated in the record · early 18th century

Paper curtain
Jeffrey & Co., 1836–1930 London, England · 1872

Pair of curtains
Artist not stated in the record · 1870s

White and lavender gauze floral curtains
Unidentified · Late 20th Century

Pair of curtains
Artist not stated in the record · 18th century

Wall Elevation for an Antechamber or Salon
Louis-Gustave Taraval, French, 1738 – 1794 · ca. 1785

Pair of Curtains
Artist not stated in the record · ca. 1790

Border
Artist not stated in the record · 18th century

Pair of bed curtains
Artist not stated in the record · 18th century

Design for Decoration of a Bed Alcove
Artist not stated in the record · ca. 1725–50

Pair of side curtains for a bed
Artist not stated in the record · early 18th century

Project for an Entrance
Carlo Marchionni, Italian, 1702–1786 · ca. 1745

Pair of bed curtains
Artist not stated in the record · early 18th century

Doorway of San Salvatore in Lauro with Decoration for the Funeral of King Frederick August III of Poland, Rome, Italy
Carlo Marchionni, Italian, 1702–1786 · 1763–64

Pair of Minbar Doors
Artist not stated in the record · ca. 1325–30

A Studio in the Villa Medici, Rome
Joseph-Eugène Lacroix, French, 1814 - 1873 · 1835

One from a Pair of Ear Ornaments (Prakaravapra Kundala)
Artist not stated in the record · ca. 1st century BCE–1st century CE

Design for a sedan chair
Artist not stated in the record · ca. 1775

Standing shelf (one of a pair)
William Linnell · ca. 1753–54

Designs for Bedroom Alcove Walls
Giuseppe Barberi, Italian, 1746–1809 · ca. 1790
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. 9463 matched · 24 examined · 4 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. 2859775 matched · 40 examined · 27 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 2026-08-29 07:42 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.