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. 14 shown for “Albany manuscript postmarked folded letter” — 42 records examined, 1 dropped by the rights gate.
Archives queried 2026-09-02 15:45 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Letter from John Gibson to John Udny, containing information for Henry Farnum
John Gibson · January 9, 1850
Albany manuscript postmarked folded letter
Artist not stated in the record · February 7,1786
Salvator Mundi
Hans Memling · 1480–85
Stampless Cover
Artist not stated in the record · 1852
Stampless Cover
Artist not stated in the record · c. 1836
Stampless Cover
Artist not stated in the record · September 20, 1853
Stampless cover
Artist not stated in the record · 1789-1798
Culpeper Courthouse, Virginia from Washington, Kentucky folded letter
Artist not stated in the record · December 31, 1803
25c single letter rate more than 400 miles Arkansas Territory stampless cover
Artist not stated in the record · March 3, 1832
One (1) folded letter to Charles Potter, 1815
Artist not stated in the record · February 6, 1815
Folded letter from Prescott to Potter, 1815
Artist not stated in the record · January, 1815
Folded letter from Prescott to Potter, 1815
Artist not stated in the record · January-February, 1815
Stampless Cover
Artist not stated in the record · 1844
Philadelphia from New Orleans folded letter
Artist not stated in the record · July 20, 1810
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. 2 matched · 2 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.2 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 27671 matched · 40 examined · 1 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 2026-09-02 15:45 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.