1909", numbered "16" and "221 / E", as well as with exhibition labels. 81 x 70 cm (31.8 x 27.5 in). [KT]. • From the "Brücke" heyday, when the artists created their most important nudes on the Moritzburg Ponds. • The pinnacle of the collaborative work and life of the group of artists, created during their stays at the Moritzburg Ponds. • The immediacy of the informal depiction of nudes in untouched nature is one of the guiding principles of "Brücke" art. • The painting "Im Wald" by Ernst Ludwig Kirchner (lot 24) from the same period as Erich Heckel"s " Zwei Menschen im Freien " is also part of this auction . Erich Heckel, Werke der Brückezeit 1907-1917, Württembergischre Kunstverein, Stuttgart September 15 - October 27, 1957, no. 16. Erich Heckel, Galerie Wolfgang Ketterer, Muüinch, Hanover, Campione d"Italia, February 26 - April 17, 1966, no. 63. Moderne Kunst VI, Galerie Roman Norbert Ketterer, Campione d"Italia, 1969, no 22. Künstler der Brücke an den Moritzburger Seen 1909-1911, Brücke-Museum, Berlin, October 1 - December 15, 1970, no. 34. Erich Heckel. Galerie Roman Norbert Ketterer, Campione d"Italia, 1970, no. 2. Erich Heckel zum 90. Geburtstag, Galerie Roman Norbert Ketterer, Campione d"Italia, 1973, no. 2. Erich Heckel, Galleria Henze, Campione d"Italia, 1983, no. 2. Erich Heckel, Museum Folkwang, Essen, September 18 - November 20, 1983, no. 16. Futurismo & Futurismi, 13. Biennale di Venezia, Palazzo Grassi, Venice, May 4 - October 12, 1986, no. 769 (with the label). Figures du moderne, L"expressionisme en allemagne 1905-1914, Musée d"art moderne de la ville de Paris, Paris, November 18 - March 14, 1992, no. 3 (with the label). Künstler der Brücke in Moritzburg, Museum Schloß Moritzburg, Moritzburg bei Dresden, July 1 - October 1, 1995, no. 37. The Romantic Spirit in German Art 1790 - 1990, Scottish National Gallery of modern art, Edinburgh, July 28 - September 7, 1994, no. 137 (with the label on the frame). Ernste Spiele, Der Geist der Romantik in der deutschen Kunst 1790-1990, Haus der Kunst, Munich, February 4 - May 1, 1995, no. 212. Paul Gauguin. Das verlorene Paradies, Museum Folkwang, Essen, June 17 - October 18, 1998; Neue Nationalgalerie, Berlin, October 31 - January 10, 1999, no. E2. Die Badenden, Mensch und Natur im deutschen Expressionismus, Kunsthalle, Bielefeld, September 3 - November 19, 2000, no. 37. Die Brücke in Dresden 1905-1911, Galerie Neue Meister, Dresden, October 20, 2001 - January 6, 2002, no. 265. Femme fatale. il mito universale della donna nell"arte da Modigliani a Warhol, Villa Ponti, Arona, July 31 - November 7, 2004 (with the label on the frame). El Nacimiento del Espresionismo Alemán, Museo Thyssen-Bornemisza, Madrid, February 1 - May 15, 2005; El naixement de l"expressionisme, Museu Nacional d"Art de Catalunya, Barcelona, June 2 - September 4, 2006, no. 157. 100 Jahre Expressionismus, Neue Nationalgalerie, Berlin, June 8 - August 28, 2005, no. 166.