What medium is "Sketch of a Ship for the Landing of Columbus (from Sketchbook)"?

Sketch of a Ship for the Landing of Columbus (from Sketchbook) is Graphite on wove paper with gilt edges, bound in a leather cover.

Is "Sketch of a Ship for the Landing of Columbus (from Sketchbook)" in the public domain?

Yes, Sketch of a Ship for the Landing of Columbus (from Sketchbook) is in the public domain and available for free download under CC0 license.

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This artwork was created ca. 1891.

Albert Bierstadt, ca. 1891