Is "Madame Cézanne (Hortense Fiquet, 1850–1922) in the Conservatory" in the public domain?

Yes, Madame Cézanne (Hortense Fiquet, 1850–1922) in the Conservatory is in the public domain and available for free download under CC0 license.

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Madame Cézanne (Hortense Fiquet, 1850–1922) in the Conservatory

Paul Cézanne, 1891