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. 17 shown for “Certificate of appointment for postmaster” — 46 records examined, 1 dropped by the rights gate.
Archives queried 2026-08-27 09:59 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
Certificate of appointment for postmaster
Artist not stated in the record · 1911
Longcase astronomical regulator
Ferdinand Berthoud · ca. 1768–70
Certificate of appointment for postmaster
Artist not stated in the record · December 13, 1906
An Egyptian Peasant Woman and Her Child
Léon Bonnat · 1869–70
Certificate of appointment for postmaster
Artist not stated in the record · 1873
Don Gaspar de Guzmán (1587–1645), Count-Duke of Olivares
Juan Bautista Martínez del Mazo · ca. 1636 or later
Certificate of appointment for a CSA postmaster
Artist not stated in the record · May 23, 1862
Sebastian Andorfer (1469–1537)
Hans Maler · 1517
Certificate of appointment for a CSA postmaster
Artist not stated in the record · August 9, 1861
Certificate of appointment for John T. Jackson
Artist not stated in the record · March 23, 1891
Appointment for deputy postmaster
Artist not stated in the record · 1861
Deputy postmaster appointment certificate
Artist not stated in the record · March 29, 1784
Weyanoke, LA postmaster's file Service Award certificate
Artist not stated in the record · August 16, 1994
Postmaster certificate of appointment
Artist not stated in the record · 1862
Weyanoke, LA postmaster's file appointment letter
Artist not stated in the record · July 9,1958
Weyanoke, LA postmaster's file John Minor Wisdom cover
Artist not stated in the record · July 10, 1957
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. 6 matched · 6 examined · 1 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.5 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 2895163 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 2026-08-27 09:59 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.