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. 13 shown for “Cover carried aboard Lindbergh's transatlantic flight” — 41 records examined, 5 dropped by the rights gate.
Archives queried 2026-08-31 23:01 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Famous Women
Gai Qi · dated 1799
Cover carried aboard Lindbergh's transatlantic flight
Artist not stated in the record · May 20, 1927
Letter from inside Charles Lindbergh transatlantic flight cover
Artist not stated in the record · May 16, 1927
Transatlantic cover to Florence, Italy
Artist not stated in the record · December 17, 1863
Taussig US first airmail flight signed by Woodrow Wilson cover and letter
Artist not stated in the record · May 15, 1918
Amelia Earhart's flight suit
Arnold, Constable & Company · c. 1928
Ryan NYP "Spirit of St. Louis", Charles A. Lindbergh
Ryan Aircraft Co. · 1927
Lockheed Sirius "Tingmissartoq", Charles A. Lindbergh
Lockheed Aircraft Company · 1931-1933
Headphones, Radio, Lockheed Sirius "Tingmissartoq", Lindbergh
Pan American World Airways System · 1931-1933
Photograph of NC-4 Flying Boat
Artist not stated in the record · May 1919
Radio, Receiver, Pan Am, Lockheed Sirius "Tingmissartoq", Lindbergh
Pan American World Airways System · 1931-1933
Aluminum Pot and Lid, Lockheed Sirius "Tingmissartoq", Lindbergh
Artist not stated in the record · 1931-1933
Union flag-of-truce cover
Artist not stated in the record · October 1, 1864
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. 1 matched · 1 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.1 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 47823 matched · 40 examined · 5 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 23:01 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.