Two 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 “Project for Entablature and Pediment” — 54 records examined, 0 dropped by the rights gate.
Archives queried 2026-09-06 15:13 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Tabernacle House Altar with the Adoration of the Shepherds, the Adoration of the Magi, and the Annunciation.
Reinhold Vasters · second half 16th century (panels); ca. 1865–90 (frame)

Project for Entablature and Pediment
Artist not stated in the record · 1700–1725

Cabinet (Fassadenschrank)
Artist not stated in the record · early 17th century

Project for an Entablature and Pediment
Artist not stated in the record · 1700–1725

Glass hexagonal amphoriskos
Artist not stated in the record · 1st half of 1st century CE

Studies for Entablatures and Pediment
Filippo Marchionni, Italian, 1732–1805 · ca. 1770

Glass hexagonal bottle
Artist not stated in the record · 1st half of 1st century CE

Two Projects for Door Frames
Artist not stated in the record · 1660–1670

Design for the Tomb of a Youth
Parmigianino (Girolamo Francesco Maria Mazzola) · 1524–25

Window Cases with Alternate Suggestions
Filippo Marchionni, Italian, 1732–1805 · 1750–70

Figures in One of Michelangelo's Niches on the Apse of St. Peter's, Rome
Hubert Robert · ca. 1763

Elevation for a Rusticated Gateway with Tuscan Columns
Artist not stated in the record · ca. 1575

Design for a Monumental Altar, plate Q from "Unterschiedliche Neu Inventierte Altäre mit darzu gehörigen Profillen u. Grundrißen"
Jacob Gottlieb Thelot · printed ca. 1750–56

Project: The elevation of an altar
Artist not stated in the record · 1575–1600

Design for a Wall Decoration with the Sacrifice of Abraham and the Flight into Egypt
Giovanni Lanfranco · 1582–1647

Project for a Chimney Piece
Artist not stated in the record · ca. 1550

Study of a Figure in a Niche (Saint Ambrose; recto); Architectural Studies: Four Alternative Designs for Fictive Niches and an Unrelated Design with Garlands (verso), ca. 1560-67
Giuseppe Arcimboldo · 1564–65

Design for a Main Altar
Giuseppe Barberi, Italian, 1746–1809 · 1746-1809

Study for a Triumphal Arch (recto); Alternate Study for a Triumphal Arch (verso)
Hubert Robert · ca. 1800

Door in a garden wall
Filippo Marchionni, Italian, 1732–1805 · ca. 1754

Alphonse de Gisors (1796–1866)
Pierre Jean David d'Angers · 1827

Design for a Window Case
Artist not stated in the record · 18th century

Recto: Temple Types: in Antis and Prostyle (Vitruvius, Book 3, Chapter 2, nos. 2, 3); Verso: Temple Types: Peripteral (Vitruvius, Book 3, Chapter 2, no. 5).
Sangallo family · 1530–45

Project for the modernization of an altar
Luigi Voghera, Italian, 1788 - 1840 · ca. 1830
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. 14 matched · 14 examined · 0 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. 2036868 matched · 40 examined · 0 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 2026-09-06 15:13 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.