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 “New York, NY, Sept. 11, 2001, postmark handstamp” — 56 records examined, 4 dropped by the rights gate.
Archives queried 2026-08-31 22:55 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Broadway, New York, West Side from Fulton Street to Courtland Street
Boell and Michelin · 1856
New York, NY, Sept. 11, 2001, postmark handstamp
Artist not stated in the record · September 11, 2001
Panoramic View of New York Taken from the North River
Robert Havell Jr. · 1844
New York, NY, Sept. 11, 2001, postmark handstamp
Artist not stated in the record · September 11, 2001
Broadside
Joseph Meeks & Sons · 1833
Auxiliary handstamp, UNKNOWN
Artist not stated in the record · September 11, 2001
Broadway, New-York from Canal to Grand Street, West Side
Julius Bien · 1856
Auxiliary handstamp, MOVED
Artist not stated in the record · September 11, 2001
John James Audubon
Francis d' Avignon · 1850
Auxiliary handstamp, UNKNOWN
Artist not stated in the record · September 11, 2001
Hanington's Dioramic Representation of the Great Fire in New York, Dec. 16 and 17, 1835. Now Exhibiting with Other Moving Dioramic Scenes, at the American Museum Every Evening...
H. Sewell · 1836
Auxiliary handstamp, REFUSED
Artist not stated in the record · September 11, 2001
The Hudson River Portfolio
William Guy Wall · 1821–25
Transatlantic cover to Selkirk, Scotland
Artist not stated in the record · 1857
The American Drawing Book: Manual for the Amateur, Basis of Study for the Professional Artist
John Gadsby Chapman · 1864
Stampless Cover
Artist not stated in the record · 1856
The Cooper Vignettes
James Fenimore Cooper · 1862
Stampless Cover
Artist not stated in the record · 1850
Boating
Edouard Manet · 1874
Stampless Cover
Artist not stated in the record · 1802
First Merchant's Exchange, New York: plan of main floor
Alexander Jackson Davis · probably 1826
Maryland Line, MD, postmark handstamp
Artist not stated in the record · early 1870s
Repeating watch
Francis Perigal · probably ca. 1770
Railway Post Office cover
Artist not stated in the record · 1847-1849
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. 16 matched · 16 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. 853428 matched · 40 examined · 4 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 22:55 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.