Horizontal view of a mountain range, with low hanging clouds seen in the distance. Gray sky overhead. Sketch finished at top quarter only. Date: 1860–70. Dimensions: 18.5 x 30.4 cm (7 5/16 x 11 15/16 in.). Medium: brush and oil, pencil on cardboard. Collection: Cooper Hewitt, Smithsonian Design Museum. Drawing, Mountainous landscape, 1860–70 (CH 18193723)