Who created "Group of Seven Horses"?

Group of Seven Horses was created by Hans Baldung (called Hans Baldung Grien) in 1534.

What medium is "Group of Seven Horses"?

Group of Seven Horses is Woodcut.

Yes, Group of Seven Horses is in the public domain and available for free download under CC0 license.

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Hans Baldung (called Hans Baldung Grien), 1534