Herberts Mangolds – Caucasus. 1969, paper, watercolor, 29×40.5 cm

Herberts Mangolds – Landscape 1970. Paper, watercolor, 28.5×40.5 cm

Herberts Mangolds – The factory 1961, paper/watercolor, 28.5×40.5 cm

Herberts Mangolds – Winter. 1969, paper, watercolor, 29×40.5 cm