Ernst Ludwig Kirchner ‘Königstein in the Taunus Mountains (Kohnstamm Sanatorium)’ 1916. Pen and ink on very thin cream wove paper. Image courtesy Galerie St. Etienne

Ernst Ludwig Kirchner 'Königstein in the Taunus Mountains (Kohnstamm Sanatorium)' 1916. Pen and ink on very thin cream wove paper. Image courtesy Galerie St. Etienne

Ernst Ludwig Kirchner ‘Königstein in the Taunus Mountains (Kohnstamm Sanatorium)’ 1916. Pen and ink on very thin cream wove paper. Image courtesy Galerie St. Etienne