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Summer, from The Four Seasons
From the collection of Art Institute of Chicago. Free to download, adapt and use — no permission needed.
Credit lineSummer, from The Four Seasons. 1570. Pieter van der Heyden (Flemish, c. 1530–after 1584), after Pieter Bruegel, the elder (Flemish, 1525/30–1569), published by Hieronymus Cock (Flemish, c. 1510–1570). The Art Institute of Chicago, The Amanda S. Johnson and Marion J. Livingston Fund. CC0.