Physical Dimensions: block: 28.2 x 23.5 cm (11 1/8 x 9 1/4 in.)
sheet: 40.9 x 35.2 cm (16 1/8 x 13 7/8 in.)
Provenance: Dr. Frédéric Bauer, Davos, acquired from the artist; private collection, Germany, after 1954; (Wolfgang Wittrock, Düsseldorf); purchased 1999 by NGA.