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a) In the Trenches (recto); b) Study for In the Trenches (verso)
From the collection of National Gallery of Art. Free to download, adapt and use — no permission needed.
Subjects
Credit linea) In the Trenches (recto); b) Study for In the Trenches (verso). c. 1914/1919. Jean-Louis Forain. National Gallery of Art, Rosenwald Collection. CC0.