Is "Full-length Portrait of Thomas Nast with a Group of Caricatures" in the public domain?

Yes, Full-length Portrait of Thomas Nast with a Group of Caricatures is in the public domain and available for free download under CC0 license.

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Full-length Portrait of Thomas Nast with a Group of Caricatures

This artwork was created ca. 1888.

Thomas Nast, ca. 1888