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 “Post Office Act of 1791” — 64 records examined, 2 dropped by the rights gate.
Archives queried 2026-09-04 01:33 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Moses and Aaron before Pharaoh: An Allegory of the Dinteville Family
Master of the Dinteville Allegory · 1537
Post Office Act of 1791
Artist not stated in the record · March 3, 1791
Mantel clock with musical movement
Jean-Baptiste-André Furet · ca. 1784
Post Office Act of 1792 publication
Artist not stated in the record · 1792
The Annunciation
Gerard David · 1506
The Baltimore Daily Intelligencer newspaper
Artist not stated in the record · May 29, 1794
The Death of Socrates
Jacques Louis David · 1787
Post Office Act of 1790
Artist not stated in the record · Jauary 4, 1790
The Public Viewing David's "Coronation" at the Louvre
Louis Léopold Boilly · 1810
Letter to Schuyler Colfax from Post Office Department
Artist not stated in the record · 1865
Antoine Laurent Lavoisier (1743–1794) and Marie Anne Lavoisier (Marie Anne Pierrette Paulze, 1758–1836)
Jacques Louis David · 1788
Franklin and Foxcroft rate chart
Artist not stated in the record · 1765
Sulking
Edgar Degas · ca. 1870
Post Office Act of 1794 publication
Artist not stated in the record · 1794
Circus Sideshow (Parade de cirque)
Georges Seurat · 1887–88
Stampless Cover
Artist not stated in the record · 1804
The Surrender of Earl Cornwallis (Lieutenant General of the British Army in North America) to General Washington & Count De Rochambeau, on the 19th of October, 1781, from Barnard's New, Complete and Authentic History of England
T. Thornton · 1781–83, or 1791
The American Apollo magazine
Artist not stated in the record · March 16, 1792
Progressive Democracy – Prospect of a Smash Up
Louis Maurer · 1860
Queen Anne 10th Act in 9th year of her reign
Artist not stated in the record · 1710
Storming the Castle – "Old "Abe" on Guard
Currier & Ives · 1860
New York Central railway mail car model
Artist not stated in the record · c. 1914-1968
"Taking the Stump" or Stephen in Search of his Mother
Louis Maurer · 1860
The American Apollo magazine
Artist not stated in the record · March 9, 1792
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. 2868025 matched · 40 examined · 2 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 2026-09-04 01:33 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.