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. 19 shown for “Photograph of Second Assistant Postmaster General Otto Praeger” — 47 records examined, 1 dropped by the rights gate.
Archives queried 2026-08-31 23:12 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
The Annunciation
Hans Memling · 1480–89
Photograph of Second Assistant Postmaster General Otto Praeger
Artist not stated in the record · c. 1920
The Crucifixion; The Last Judgment
Jan van Eyck · ca. 1436–38
Telegram from Praeger on September 5, 1918
Artist not stated in the record · September 5, 1918
Christ Appearing to His Mother
Juan de Flandes · ca. 1496
Letter of appointment for Benjamin Lipsner
Artist not stated in the record · July 2, 1918
Abner's Messenger before David; The Queen of Sheba Bringing Gifts to Solomon; The Annunciation
Master of the Saint Barbara Legend · ca. 1480
Telegram to Otto Praeger, September 4, 1918
Artist not stated in the record · September 4, 1918
The Flight into Egypt
Cosmè Tura (Cosimo di Domenico di Bonaventura) · 1470s
Telegram to Otto Praeger, September 5, 1918
Artist not stated in the record · September 5, 1918
Saint Agapitus of Praeneste in the Arena; (interior) The Beheading of Saint Agapitus of Praeneste
Swiss Painter · ca. 1500–1505
Telegram
Artist not stated in the record · 1918
Saint Remigius Replenishing the Barrel of Wine; (interior) Saint Remigius and the Burning Wheat
Swiss Painter · ca. 1500–1505
Telegram to Praeger on September 5, 1918
Artist not stated in the record · September 5, 1918
Telegram to Adjutant General, July 17, 1918
Artist not stated in the record · July 17, 1918
Memo from B. Lipsner to Army Adjutant General
Artist not stated in the record · July 3, 1918
Telegram to Benjamin Lipsner, September 4, 1918
Artist not stated in the record · September 4, 1918
Telegram
Artist not stated in the record · 1918
Telegram to Benjamin Lipsner, September 3, 1918
Artist not stated in the record · September 3, 1918
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. 7 matched · 7 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.7 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 2924821 matched · 40 examined · 1 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 2026-08-31 23:12 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.