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. 12 shown for “Night cap” — 24 records examined, 2 dropped by the rights gate.
Archives queried 2026-08-30 03:53 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.Smithsonian Open Access: HTTP 429 from api.si.edu. Results from the remaining archive are shown unchanged — nothing is substituted for a source that did not answer.

Night cap
Artist not stated in the record · 1600–1620

Night cap
Artist not stated in the record · early 19th century

Night cap
Artist not stated in the record · late 16th–early 17th century

Bust of a man in night cap and gown
Baron Dominique Vivant Denon · 18th–early 19th century

Morning Noon and Night
William Heath ('Paul Pry') · ca. 1829

The Ghost of My Departed Husband, or Wither my Love ah wither art thou gone
Thomas Rowlandson · April 1, 1808

The Ghost of My Departed Husband, or Wither my Love ah wither art thou gone
Thomas Rowlandson · [April 1, 1808], reissued September 1, 1811

The First Night of My Wedding, or Little Boney No Match For an Arch Dutchess
Thomas Rowlandson · April 25, 1810

The Flying Breakfast, or Contents of a Night Coach
Anonymous, British, 18th century · March 9, 1792

Miniature Brahmanical Shrine
Artist not stated in the record · 10th century

Merry Company on a Terrace
Jan Steen · ca. 1670

The Landlady at Your service Sir. – You will find your Bed well Air'd as I slept in it my Self last night: Sketches of Character, no. 5
William Heath ('Paul Pry') · ca. 1829
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. 31 matched · 24 examined · 2 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. HTTP 429 from api.si.edu. No records from this archive are shown for this query.Unavailable
These figures describe the pass run at 2026-08-30 03:53 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.