License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
James McNeill Whistler. U.S. Coast Survey...Reconnaissance of Smith's or Blunt's Island, Washington / U.S. Coast Survey...Sketch of Anacapa Island in Santa Barbara Channel, 1854–57. The Metropolitan Museum of Art.