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. 17 shown for “Photograph of US mail streetcar” — 57 records examined, 23 dropped by the rights gate.
Archives queried 2026-09-09 19:51 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Basket of Flowers
Eugène Delacroix · 1848–49
Photograph of US mail streetcar
Artist not stated in the record · c. 1896
Christ Blessing, Surrounded by a Donor Family
German Painter · ca. 1573–82
Photograph of US mail streetcar
Artist not stated in the record · c. 1898
Commode à vantaux
David Roentgen · ca. 1775–79 with later alterations
Photograph of mail streetcar in Washington, DC
Artist not stated in the record · c. 1900
Rebel Artillery Soldiers, Killed in the Trenches of Fort Mahone, Called by the Soldiers "Fort Damnation," at the Storming of Petersburgh, Virginia
Thomas C. Roche · April 2, 1865
Photograph of mail streetcar in St. Louis, Missouri
Artist not stated in the record · c. 1896
The Resurrection
Spanish (Aragonese) Painter
Photograph of interior of mail streetcar in Boston
Artist not stated in the record · c. 1899
Photograph of mail streetcar in Boston, Massachusetts
Artist not stated in the record · c. 1900
Bunkerhill Car House Owney tag
Artist not stated in the record · 1888-1897
Photograph of US military personnel handling holiday mail
Artist not stated in the record · c. 1944
Photograph of letter carrier collecting mail
Artist not stated in the record · c. 1947
Photograph of US Navy mail call
Artist not stated in the record · 1944
Photograph of New York Central harbor mail boat
Artist not stated in the record · c. 1909
Photograph of Christmas mail
Artist not stated in the record · 1924
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. 17 matched · 17 examined · 12 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.5 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 2935854 matched · 40 examined · 11 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 19:51 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.