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 “Ericsson, John” — 43 records examined, 26 dropped by the rights gate.
Archives queried 2026-09-05 20:18 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Life of John Ericsson, from the Histories of Poor Boys and Famous People series of booklets (N79) for Duke brand cigarettes
W. Duke, Sons & Co. · 1888
John Ericsson
Unidentified Artist · c. 1861-62
John Ericsson
Augustus Saint-Gaudens, 1 Mar 1848 - 3 Aug 1907 · c. 1872
John Ericsson
Unidentified Artist · c. 1862
John Ericsson
Charles DeForest Fredricks, 11 Dec 1823 - 25 May 1894 · 1861
John Ericsson
Arvid Frederick Nyholm, 1866 - 1927 · 1912
The First Naval Conflict Between Iron Clad Vessels
Charles Parsons, 1821 - 1910 · 1862
Invention for Improvement in the Construction of Ordnance
Ericsson, John · 1864
Ericsson Air Engine, Patent Model
Artist not stated in the record · 1858
Ericsson Hot-Air Engine, Patent Model
Artist not stated in the record · 1880-03-30
Ericsson Hot-Air Engine, Patent Model
Artist not stated in the record · 1860
5c Statue of John Ericsson plate proof
Bureau of Engraving and Printing · May 20, 1926
Ericsson Steam Engine, Patent Model
Artist not stated in the record · 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. 3 matched · 3 examined · 2 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. 260500 matched · 40 examined · 24 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 2026-09-05 20:18 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.