Robert Zünd – Kunsthaus Zürich. Eichenwald (1882)
Robert Zünd – Kunsthaus Zürich. Title: Eichenwald. Date: 1882. Materials: oil on canvas. Dimensions: 119 x 159 cm. Sourcehttps://commons.wikimedia.org/wiki/File:Z%C3%BCnd_Eichenwald_1882.jpg. I have changed the light of the original photo.
Jacob van Ruisdael – Kunsthaus Zürich. Die Bleichen von Haarlem/View of Haarlem with Bleaching Grounds (c. 1670)
Materials: oil on canvas. Dimensions: 62.5 x 55.2 cm. Nr.: ? Acquisition: Stiftung Prof. Dr. L. Ruzicka, 1949. Source: http://alloilpaint.com/ruisdael/17.jpg
elsewhere 
