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. 19 shown for “United States Express Company postal card” — 64 records examined, 22 dropped by the rights gate.
Archives queried 2026-08-31 21:28 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Card
Artist not stated in the record · 1800–1830
United States Express Company postal card
Artist not stated in the record · September 12, 1899
Card
Artist not stated in the record · 1809
United States Express Company C.O.D. cover
Artist not stated in the record · April 4, 1896
The Card Players
Paul Cézanne · 1890–92
United States Express Company receipt
Artist not stated in the record · October 23, 1858
Ewer and Plateau
Gorham Manufacturing Company · 1901
United States Express Company receipt
Artist not stated in the record · October 27, 1858
The Express Train
Charles Parsons · 1859
United States Express Company advertising cover send to J. Hibbler
Artist not stated in the record · September 22
Express Wagon #420
Brewster & Co. · 1850–70
5c prepaid United States Express Company single
Artist not stated in the record · c. 1854
Bar Thuldy's Statue: Liberty Frightenin de World
Currier & Ives · 1886
5c Documentary Express revenue stamp single on Adams Express Company’s receipt
Artist not stated in the record · February 6, 1863
Burlington mail car model
Artist not stated in the record · c. 1930-1970
Albany Letter Express label from 1st printing of 500
Artist not stated in the record · c. 1970
Albany Letter Express definitive handstamp delivered March 24, 1970
Artist not stated in the record · c. 1970
Albany Letter Express label from 2nd printing of 500
Artist not stated in the record · c. 1970
1865 adhesive label of S.A. Taylor’s Albany Letter Express
Artist not stated in the record · c. 1970
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. 2715 matched · 24 examined · 17 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.7 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 5512712 matched · 40 examined · 5 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 2026-08-31 21:28 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.