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 “Express from Richmond to Louisville posted to Boston cover” — 64 records examined, 5 dropped by the rights gate.
Archives queried 2026-08-31 19:53 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
James Stuart (1612–1655), Duke of Richmond and Lennox
Anthony van Dyck · ca. 1633–35
Express from Richmond to Louisville posted to Boston cover
Artist not stated in the record · August 17, 1861
Pipe Organ
Thomas Appleton · 1830
Express from Richmond to Louisville posted to New York cover
Artist not stated in the record · August 8, 1861
Salisbury Cathedral from the Bishop's Grounds
John Constable · ca. 1825
Confederate through the lines cover
Artist not stated in the record · June 29, 1861
Bullfight in a Divided Ring
Goya (Francisco de Goya y Lucientes) · ca. 1810
Transatlantic cover to Boston
Artist not stated in the record · August 29, 1851
Madonna and Child Enthroned with Saints
Raphael (Raffaello Sanzio or Santi) · ca. 1504
Letter to A. H. Markland from Deputy Quartermaster General
Artist not stated in the record · 1874
The Crucifixion; The Last Judgment
Jan van Eyck · ca. 1436–38
Letter from Second Assistant Postmaster General
Artist not stated in the record · 1861
Majas on a Balcony
Goya (Francisco de Goya y Lucientes) · ca. 1800–1810
Albany Letter Express label from 1st printing of 500
Artist not stated in the record · c. 1970
Young Lady in 1866
Edouard Manet · 1866
Albany Letter Express label from 2nd printing of 500
Artist not stated in the record · c. 1970
The Adoration of the Shepherds
Andrea Mantegna · shortly after 1450
Travel pass for Surveyor William Goddard
Artist not stated in the record · September 4, 1776
The Adoration of the Magi
Joos van Wassenhove · 1472–74
Letter
Artist not stated in the record · November 18,1847
Damascus Room
Artist not stated in the record · dated 1119 AH/1707 CE
Confederate through the lines cover
Artist not stated in the record · 1861
Portrait of a Young Man
Cosmè Tura (Cosimo di Domenico di Bonaventura) · 1470s
3c Washington on Confederate cover
Artist not stated in the record · May 25, 1861
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. 311 matched · 24 examined · 2 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. 1136279 matched · 40 examined · 3 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 19:53 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.