Is "Arrangement in Black, No. 3: Sir Henry Irving as Philip II of Spain" in the public domain?

Yes, Arrangement in Black, No. 3: Sir Henry Irving as Philip II of Spain is in the public domain and available for free download under CC0 license.

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Arrangement in Black, No. 3: Sir Henry Irving as Philip II of Spain

This artwork was created 1876, reworked 1885.

James McNeill Whistler, 1876, reworked 1885