Humboldt Eiche, 2015, lithography 65/50 cmLithograph on Arches paper, 2015, 56/76 cm Lithography on Arches paper, 2012, 56,5/76 cmLithography on Arches paper, 2015, 65/50 cm Atelier Alain Hurstel Berlin, Lithographie sur Arches, 2012, 65/50 cm Lithographie sur Arches, 2015, 65/50 cm Lithographie, 2015