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. 13 shown for “Kansas City Post Office Department Owney tag” — 41 records examined, 0 dropped by the rights gate.
Archives queried 2026-09-01 07:51 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Fisherman's Lodge At Mount Xisai
Li Jie · ca. 1170

Kansas City Post Office Department Owney tag
Artist not stated in the record · March 23, 1894

Kansas City, Missouri Owney tag
Artist not stated in the record · 1893

Mailing Clerks Denver, Colorado Owney tag
Artist not stated in the record · August 13, 1894

Kansas City, Missouri Owney tag
Artist not stated in the record · 1888-1897

Kansas City, Missouri Owney tag
Artist not stated in the record · March 23, 1894

Lawrence, Kansas Owney tag
Artist not stated in the record · 1888-1897

Cincinnati, Ohio Owney tag
Artist not stated in the record · 1888-1897

E.D. Simpson Owney tag
Artist not stated in the record · 1893

Washington DC City Post Office Owney tag
Artist not stated in the record · April 13, 1892

Brooklyn, New York Owney tag
Artist not stated in the record · 1888-1897

J.P. Palmer Owney tag
Artist not stated in the record · 1888-1897

Hotel Adams Owney tag
Artist not stated in the record · 1888-1897
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. 1 matched · 1 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.1 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 891678 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 07:51 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.