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. 24 shown for “Post Manufacturing Co.” — 64 records examined, 24 dropped by the rights gate.
Archives queried 2026-09-01 20:10 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Pitcher
American Porcelain Manufacturing Company · 1853–56
Training boxing gloves used and signed by Cassius Clay
Post Manufacturing Co. · 1960
Vase
Grueby Pottery · ca. 1898–1909
Slide Rule, Mathematical, Sally Ride
Frederick Post Co.
Untitled
Gorham Manufacturing Company · 1881
Star Route registry padlock
Eagle Lock Company · Date on Shackle: 1873
Covered Vase
Faience Manufacturing Company · 1886–90
Star Route registry padlock
Eagle Lock Company · 1873
Punch Bowl
Gorham Manufacturing Company · 1901
Lever pouch padlock
Smith & Egge Company · Date on Shackle: 1890
The Bryant Vase
Tiffany & Co. · 1876
Lever pouch padlock
Smith & Egge Company · Date on Shackle: 1881
Covered Dish
John T. Vansant Manufacturing Company · ca. 1883
Lever pouch padlock
Smith & Egge Company · Date on Shackle: 1886
The Abduction of Cassandra by Ajax from a set of The Horses
Frans Cleyn · designed early 1630s, woven ca. 1650–70
Street Lamppost Letterbox
Artist not stated in the record · c. 1880
Deep Dish
Artist not stated in the record · 1450–1470
Cleveland, OH, postmark handstamp
Artist not stated in the record · March 1, 1904
Armchair
Pottier and Stymus Manufacturing Company · ca. 1875–76
Lever pouch padlock
Smith & Egge Company · 1882
Pitcher
American Pottery Manufacturing Company · 1833–50
Lever pouch padlock
Smith & Egge Company · 1882
Teapot
American Pottery Manufacturing Company · 1838–50
Lever pouch padlock
Smith & Egge Company · 1888
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. 5485 matched · 24 examined · 7 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.12 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 447106 matched · 40 examined · 17 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 2026-09-01 20:10 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.