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 “Marxism and Negro Liberation” — 40 records examined, 24 dropped by the rights gate.
Archives queried 2026-09-02 20:17 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 Metropolitan Museum of Art: HTTP 403 from collectionapi.metmuseum.org. Results from the remaining archive are shown unchanged — nothing is substituted for a source that did not answer.
Marxism and Negro Liberation
Artist not stated in the record · 1951
The Road to Liberation for the Negro People
Artist not stated in the record · 1937
National Anti-Slavery Standard Vol. XX, No. 19
National Anti-Slavery Standard, American, 1840 - 1870 · September 24, 1859
Broadside offering reward for capture of George, Jefferson, Esther, and Amanda
Artist not stated in the record · January 20, 1840
Pennsylvania Packet, and Daily Advertiser No. 2822
Artist not stated in the record · February 20, 1788
Pennsylvania Packet, and Daily Advertiser No. 2745
Artist not stated in the record · November 22, 1787
John Russwurm
Unidentified Artist · c. 1850
Broadside offering reward for the capture of the enslaved man Richard Low
Artist not stated in the record · July 19, 1853
Pinback button supporting African Liberation
Artist not stated in the record · October 1973
Flyer advertising a demonstration in solidarity with Zimbabwean liberation
ZANU Solidarity Committee, American · 1976
Pamphlet for the 1977 March on the White House for African Liberation
African Liberation Day Coalition, American · 1977
Pinback button promoting African Liberation Day
Artist not stated in the record · 1977
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. HTTP 403 from collectionapi.metmuseum.org. No records from this archive are shown for this query.Unavailable - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 1487477 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 2026-09-02 20:17 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.