Tree Study, Fontainebleau. Dated: 1860. Dimensions: sheet (trimmed to image): 26 x 20.2 cm (10 1/4 x 7 15/16 in.) support: 51.9 x 42.3 cm (20 7/16 x 16 5/8 in.). Medium: albumen print from collodion negative mounted on paperboard. Museum: National Ga