WILLI BAUMEISTER (GERMAN 1889-1955) Zwei Kopfe (Schwestern), 1913 oil on canvas laid on board 35 x 43.5 cm (13 3/4 x 17 1/8 in.) signed, titled, and dated on artist's label on verso PROVENANCECollection of Herbert Tannenbaum, New York LITERATUREWill Grohmann, Willi Baumeister: Life and Work (New York: Harry N. Abrams, [1966]), p. 262, no. 77 (illustrated)LOT NOTESThe present lot, according to the artist's inscription on the verso label, dated June 6, 1954, is a study for Zwei Madchen (Two Girls), executed in Amden in 1946. Zwei Kopfe (Schwestern) is one of the earliest works by Baumeister to come to market.