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 “Burlington mail car model” — 64 records examined, 16 dropped by the rights gate.
Archives queried 2026-08-31 19:58 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
The Rebuke of Adam and Eve
Charles Joseph Natoire · 1740
Burlington mail car model
Artist not stated in the record · c. 1930-1970
The Jabach Family
Charles Le Brun · ca. 1660
Santa Fe Railway mail car model
Artist not stated in the record · c. 1960s-1974
Sulking
Edgar Degas · ca. 1870
Chicago & North West railroad mail car model
Artist not stated in the record · 1862-c. 1957
The Crucifixion
Master of the Codex of Saint George · ca. 1330–35
Central Pacific Railroad mail car model
Artist not stated in the record · c. 1870-1885
The Spanish Singer
Edouard Manet · 1860
Louisville & Nashville mail car model
Artist not stated in the record · 1914-1957
The Singer in Green
Edgar Degas · ca. 1884
Railway Post Office train car model
Artist not stated in the record · 1893
Young Lady in 1866
Edouard Manet · 1866
Baltimore & Ohio railway mail car model
Artist not stated in the record · 1949-1956
Young Ladies of the Village
Gustave Courbet · 1851–52
New York Central railway mail car model
Artist not stated in the record · c. 1914-1968
The Love Song
Sir Edward Burne-Jones · 1868–77
Post Office Department Exhibit Space blueprint from the Chicago World's Fair
Artist not stated in the record · c. 1933
The Woman in the Waves
Gustave Courbet · 1868
Post Office Department Exhibit Space blueprint from the Chicago World's Fair
Artist not stated in the record · c. 1933
Salvator Mundi
Albrecht Dürer · ca. 1505
Post Office Department Exhibit Space blueprint from the Chicago World's Fair
Artist not stated in the record · c. 1933
Samson Captured by the Philistines
Guercino (Giovanni Francesco Barbieri) · 1619
Post Office Department Exhibit Space blueprint from the Chicago World's Fair
Artist not stated in the record · c. 1933
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. 36 matched · 24 examined · 0 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. 40509 matched · 40 examined · 16 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 19:58 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.