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 “Postmaster reprimand form letter” — 42 records examined, 0 dropped by the rights gate.
Archives queried 2026-08-31 23:08 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
La Berceuse (Woman Rocking a Cradle; Augustine-Alix Pellicot Roulin, 1851–1930)
Vincent van Gogh · 1889
Postmaster reprimand form letter
Artist not stated in the record · 1838
Don Gaspar de Guzmán (1587–1645), Count-Duke of Olivares
Juan Bautista Martínez del Mazo · ca. 1636 or later
Personnel action warning form
Artist not stated in the record · 1863
Weyanoke, LA postmaster's file stapled cover note for POD Form 971 and 50
Artist not stated in the record · June 27, 1958
Postmaster's bill of letters from Newport to Norwich
Artist not stated in the record · November 17, 1789
Postal rates and regulations form letter
Artist not stated in the record · 1838
5c New Orleans Confederate postmaster provisional single on cover
Artist not stated in the record · September 5, 1861
Letter from Clara Booth to Mary Slade
Artist not stated in the record · January 23, 1931
Postmaster's accounting notes
Artist not stated in the record · March 31, 1814
Speed Mail letter
Artist not stated in the record · 1960
Postmaster's bill from Philadelphia post office
Artist not stated in the record · June 5, 1773
Sketch for design for label
Artist not stated in the record · c. 1970
Letter
Artist not stated in the record · August 9, 1847
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. 36465 matched · 40 examined · 0 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 23:08 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.