Franz Wilhelm Seiwert, ”Stark abstrahierte Halbfigur” 1920 Monogrammed and dated in the middle right: FWS 20 25,7 × 19,5 cm Oil on cardboard Minor retouchings August Sander, Cologne (thence by descent to the present owner) Hoerle und sein Kreis. Frechen, Kunstverein, 1970/71, cat. no. 222 / Vom Dadamax zum Grüngürtel. Cologne in the 1920s. Cologne, Kölnischer Kunstverein, 1975 (not included in the catalogue) / Die Progressiven. Hamburg, Galerie Brockstedt, 1975 (not included in the catalogue; according to label on the back) / Die Kalltal-Presse 1919–1921. [...] Die Kölner Progressiven im Kalltal und ihre Begegnung mit B. Traven. Stadt Düren, Papiermuseum of the Leopold-Hoesch-Museum, 1994, p. 97, ill. 23 / Contemporaries. August Sander and the art scene in the 1920s in the Rhineland. Cologne, Josef-Haubrich-Kunsthalle, and Kiel, Kunsthalle, 2000, p. 226, cat. no. 497, and p. 16, ill. 10 / köln progressiv 1920–33. Seiwert–hoerle–arntz. Cologne, Museum Ludwig, 2008, p. 51, ill. 56 / Los progresistas de Colonia. August Sander y su círculo de amigos. 1920–1933. Valladolid, Museo de Pasión, Sala Municipal de Exposiciones, 2012/13, ill. p. 64