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. 24 shown for “Photograph of mail streetcar in Washington, DC” — 64 records examined, 15 dropped by the rights gate.
Archives queried 2026-09-09 19:55 UTC · served from cache, not re-queried for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Washington Crossing the Delaware
Emanuel Leutze · 1851
Photograph of mail streetcar in Washington, DC
Artist not stated in the record · c. 1900
Turban Helmet
Artist not stated in the record · late 15th century–1st quarter 16th century
Photograph of US mail streetcar
Artist not stated in the record · c. 1898
Ruins of Gallego Flour Mills, Richmond
Alexander Gardner · 1865
Photograph of mail streetcar in St. Louis, Missouri
Artist not stated in the record · c. 1896
Untitled
Maxime Du Camp · 1849–51
Photograph of interior of mail streetcar in Boston
Artist not stated in the record · c. 1899
Untitled
Maxime Du Camp · 1849–51
Photograph of US mail streetcar
Artist not stated in the record · c. 1896
Untitled
Maxime Du Camp · 1849–51
Photograph of mail streetcar in Boston, Massachusetts
Artist not stated in the record · c. 1900
Untitled
Maxime Du Camp · 1849–51
Photograph of postal employee repairing a mail sack
Artist not stated in the record · c. 1920
Untitled
Maxime Du Camp · 1849–51
Photograph of postal clerks processing mail
Artist not stated in the record · 1923
Untitled
Maxime Du Camp · 1849–51
Photograph of regulation mail wagon
Artist not stated in the record · c. 1895
Untitled
Maxime Du Camp · 1849–51
Bunkerhill Car House Owney tag
Artist not stated in the record · 1888-1897
Unique Forms of Continuity in Space
Umberto Boccioni · 1913, cast 1950
Photograph of mail collection three-wheeled motorcycle
Artist not stated in the record · c. 1912
Boating
Edouard Manet · 1874
Photograph of Highway Post Office clerks at work on bus
Artist not stated in the record · 1941
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. 1306 matched · 24 examined · 3 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. 7485778 matched · 40 examined · 12 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 2026-09-09 19:55 UTC, replayed here rather than repeated. 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.