License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
George Cruikshank. The Opening of the Great Industrial Exhibition of All Nations, by Her Most Gracious Majesty Queen Victoria and His Royal Highness Prince Albert, on the 1st of May, 1851: The View is Taken from the South West Gallery, at the time when the Archbishop is offering up a Prayer for the Divine blessing upon the objects in the Exhibition, 1851. The Metropolitan Museum of Art.