Charles Sheeler, Golden Gate, 1955. Flourishing in the United States in the 1920s and 1930s, Precisionism combined American subjects with European modernist styles to create a streamlined art with crisp, linear forms rooted in the tensions of the Machine Age. The exhibition Cult of the Machine at the de Young features more than one hundred masterworks by Charles Sheeler, Georgia O'Keeffe, Charles Demuth, and other artists associated with Precisionism. Measures 4.75 x 3.25 in. Holds 14 oz.