Gropper, William. CAUCASIAN STUDIES. Ten lithographs, each titled, signed and numbered 20/35 in pencil. Portfolio, gray cardboard with black cloth at spine and flap folds, enclosing the ten print, with a label on the back board reading: "This folio of ten orriginal lithographs is number 20 of an edition limited to thirty-five copies signed by the artist, printed by hand on Papier d'Arches on the press of Gaston Dorfinant at Ile de la Cite, Paris, 1950." Some darkening or light soiling to the lower margins of the sheets, else in very good condition. This portfolio is rare.