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. 12 shown for “Haehnlen, Jacob” — 40 records examined, 18 dropped by the rights gate.
Archives queried 2026-09-10 18:12 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Jacob Haehnlen's Lithographic and Steam Power Letter Press Printing Rooms
Haehnlen, Jacob · 1866
Membership Certificate, "Friendship Fire Company, We Strive to Save in Time of Need"
Haehnlen, Jacob · ca 1868
Jacob Riis Self-Portrait
Jacob Riis, 3 May 1849 - 26 May 1914 · c. 1901
Jacob Duché
Thomas Clarke, active late 18th century · 1779
Jacob Riis
Unidentified Artist · c. 1900
John Jacob Niles
Doris Ulmann, 29 May 1882 - 28 Aug 1934 · c. 1931
Jacob Jennings Brown
John Wesley Jarvis, 1780 - 14 Jan 1840 · after 1815
Jacob Jennings Brown
Mary Estelle Elizabeth Cutts, 1814 - 1856 · c. 1825
Jacob Henry Schiff
Hermann Struck, 1876 - 1944 · 1913
Jacob Jennings Brown
Unidentified Artist · c. 1817-22
Jacob D. Cox
Mathew B. Brady, 1823? - 15 Jan 1896 · c. 1870
Chauncey Goodrich and Jacob Abbott
Auguste Edouart, 1788 - 1861 · 1841
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. The archive returned no records for this term.0 matched - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 17419 matched · 40 examined · 18 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 2026-09-10 18:12 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.