File:Alexander Archipenko, Flat Torso, 1914.jpg

Published 1920, 1922

 * Küppers, Paul Erich, Der Kubismus; ein künstlerisches Formproblem unserer Zeit, 1920
 * Yvan Goll, Archipenko, New York, 1920, marble version illus. p. 2. Yvan Goll, Theodor Daübler and Blaise Cendrars, Archipenko-Album, Potsdam, 1921, no. 1 (illustrated on the frontispiece).
 * Devětsil, Slavic and East European Collections, The New York Public Library Digital Collections. 1922, p. 60