1950. Watercolour and charcoal drawing, 30 x 46,5 cm, lo. ri. sign. and dat. Maetzel 50, matted and framed under glass, uninspected out of frame. - Painter, architect, graphic artist adn sculptor. M. studied architecture in Hannover, Dresden and Paris in 1901 and worked in urban development in Hamburg. In 1919 he was among the co-founders of the Hamburg secession a. its chairman until 1933. He is one of the main exponents of Hamburg expressionism. M.: Hamburg (Kunsthalle), Kiel, Schleswig (SHLM) a. others Lit.: Thieme-Becker, Vollmer, Der Neue Rump a. others.