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. 16 shown for “Mark Twain [Samuel Langhorne Clemens]” — 46 records examined, 25 dropped by the rights gate.
Archives queried 2026-09-03 00:28 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 Adventures of Huckleberry Finn, by Mark Twain [Samuel Langhorne Clemens]](/_next/image?url=https%3A%2F%2Fimages.metmuseum.org%2FCRDImages%2Fdp%2Fweb-large%2FDP-21546-001.jpg&w=3840&q=75)
The Adventures of Huckleberry Finn
Mark Twain [Samuel Langhorne Clemens] · 1885
Composite Group Portrait of Touring Lecturers for the American Literary Bureau
American Literary Bureau · 1868
Mark Twain
Charles Noel Flagg · 1890
Mark Twain
John White Alexander, 7 Oct 1856 - 31 May 1915 · c. 1908
Mark Twain - Samuel L. Clemens, from the series Great Americans (N76) for Duke brand cigarettes
W. Duke, Sons & Co. · 1888
Mark Twain
John White Alexander, 7 Oct 1856 - 31 May 1915 · c. 1908
Samuel L. Clemens (Mark Twain), from the Actresses series (N203) issued by Wm. S. Kimball & Co.
William S. Kimball & Company · 1889
Samuel L. Clemens (Mark Twain)
John White Alexander, 7 Oct 1856 - 31 May 1915 · 1912 or 1913
Petroleum V. Nasby, Mark Twain and Josh Billings
George M. Baker · 1869
Samuel Clemens
Alvin Langdon Coburn, 11 Jun 1882 - 23 Nov 1966 · December 21, 1908
10c Samuel L. Clemens (Mark Twain) plate proof
Bureau of Engraving and Printing · December 14, 1939
Samuel Clemens
Otto J. Schneider, 1875 - 1946 · 1906
10c American Authors Samuel L. Clemens (Mark Twain) plate proof
Bureau of Engraving and Printing · December 14, 1939
Samuel Clemens
James Affleck Shephard, 1867 - 1931 · July 6, 1907
Samuel Clemens
Jessie Tarbox Beals, 23 Dec 1870 - 30 May 1942 · 1906
Samuel Clemens
William Newzam Prior Nicholson, 5 Feb 1872 - 16 May 1949 · 1900
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 · 2 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.4 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 57 matched · 40 examined · 23 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 2026-09-03 00:28 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.