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 route map signed by Charles Lindbergh” — 64 records examined, 10 dropped by the rights gate.
Archives queried 2026-09-01 13:27 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
The Adoration of the Magi
Joos van Wassenhove · 1472–74
Post route map signed by Charles Lindbergh
Artist not stated in the record · 1928
Pierced Bowl Signed by Hasan al-Qashani
Artist not stated in the record · late 11th–early 12th century
Letter from inside Charles Lindbergh transatlantic flight cover
Artist not stated in the record · May 16, 1927
The Annunciation
Petrus Christus · ca. 1445
Lockheed Sirius "Tingmissartoq", Charles A. Lindbergh
Lockheed Aircraft Company · 1931-1933
Antoine Laurent Lavoisier (1743–1794) and Marie Anne Lavoisier (Marie Anne Pierrette Paulze, 1758–1836)
Jacques Louis David · 1788
Official Parcel Post map
Artist not stated in the record · 1913
Bag
Artist not stated in the record · 1840–60
Post route map of the Territory of Alaska
Artist not stated in the record · 1928
Bag
Artist not stated in the record · 1830–60
Post route map of Maryland, Delaware, and D.C.
Artist not stated in the record · July 1917
Bag
Artist not stated in the record · fourth quarter 19th century
Post route map of New Jersey
Artist not stated in the record · 1917
Purse
Artist not stated in the record · 1800–1830
World map with airmail routes
Artist not stated in the record · 1919-1950s
Coin purse
Artist not stated in the record · 1800–1820
Airway route map of U.S.
Artist not stated in the record · 1935
Purse
Artist not stated in the record · late 19th century
Aluminum Pot and Lid, Lockheed Sirius "Tingmissartoq", Lindbergh
Artist not stated in the record · 1931-1933
Card case
Artist not stated in the record · 1790–1810
Radio, Receiver, Pan Am, Lockheed Sirius "Tingmissartoq", Lindbergh
Pan American World Airways System · 1931-1933
Coin purse
Artist not stated in the record · 1790–1810
“Map of the United States Exhibiting the Post Roads" by Abraham Bradley
Abraham Bradley · 1796
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. 56 matched · 24 examined · 1 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. 684203 matched · 40 examined · 9 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 2026-09-01 13:27 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.