Carl Grossberg, Locomotive construction (Henschel, Kassel) 1937/38 Lower right the signature stamp: Carl Grossberg. On the reverse stamped twice with the estate stamp and the no.: A 107 50 × 40,3 cm Watercolour and pen and India ink on laid paper La visionarietà oggettiva di Carl Grossberg. Mailand, Galleria Milano, 2014, cat. no. 11 / Carl Grossberg 1894-1949. Industrie und Architektur. Munich, Galerie Michael Hasenclever, 2017, ill. 11