guggenheim-art: Rocks at Night by Paul Klee, 1939, Guggenheim Museum Solomon R. Guggenheim Museum, N
guggenheim-art: Rocks at Night by Paul Klee, 1939, Guggenheim Museum Solomon R. Guggenheim Museum, New York Estate of Karl Nierendorf, By purchase © 2016 Artists Rights Society (ARS), New York / VG Bild-Kunst, BonnMedium: Watercolor and ink on chalk-and glue-primed letter paper, mounted on paperhttps://www.guggenheim.org/artwork/2194 -- source link