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 “Military express rider receipt” — 47 records examined, 26 dropped by the rights gate.
Archives queried 2026-08-31 21:25 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Study for the Equestrian Monument to Francesco Sforza
Antonio Pollaiuolo · early to mid 1480s
Military express rider receipt
Artist not stated in the record · August 26, 1794
The Battle of Vercellae
Giovanni Battista Tiepolo · 1725–29
Military express receipt
Artist not stated in the record · October 24, 1794
José Costa y Bonells (died l870), Called Pepito
Goya (Francisco de Goya y Lucientes) · ca. 1810
Pay claim for Wyandot Express Rider signed by William Henry Harrison
Artist not stated in the record · January 15, 1813
Captain George K. H. Coussmaker (1759–1801)
Sir Joshua Reynolds · 1782
Pony Express Rider painting
Lloyd Branson, 1853 - 1925 · 1904
Antoine Laurent Lavoisier (1743–1794) and Marie Anne Lavoisier (Marie Anne Pierrette Paulze, 1758–1836)
Jacques Louis David · 1788
4c Pony Express Rider plate proof
Bureau of Engraving and Printing · June 10, 1960
Don Gaspar de Guzmán (1587–1645), Count-Duke of Olivares
Juan Bautista Martínez del Mazo · ca. 1636 or later
5c Documentary Express revenue stamp single on Adams Express Company’s receipt
Artist not stated in the record · February 6, 1863
The Sacrifice of Jephthah's Daughter
Massimiliano Soldani · modeled 1722, probably cast 1730–35
Replica of a Pony Express mochila
Artist not stated in the record · c. 1986
United States Express Company receipt
Artist not stated in the record · October 23, 1858
United States Express Company receipt
Artist not stated in the record · October 27, 1858
3c Pony Express plate proof
Bureau of Engraving and Printing · March 19, 1940
Post rider receipt
Artist not stated in the record · March 19, 1687
3c Pony Express die proof attached to plate proof
Bureau of Engraving and Printing · March 20, 1940
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. 7 matched · 7 examined · 0 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. 79526 matched · 40 examined · 26 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 21:25 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.