License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Aegidius Sadeler II. View of the column of Trajan, shown with its pedestal dug out from the earth, surrounded by buildings at the base of the Quirinal Hill, Rome, plate 31 from "Ruins of the antiquity of Rome, Tivoli, Pozzuoli, and other places" (Vestigi della antichità di Roma, Tivoli, Pozzvolo et altri luochi), 1606. The Metropolitan Museum of Art.