Pencil on thin cream wove paper, 1932. 216x280 mm; 81/2x11 inches. Signed, dated and inscribed "Preliminary Sketch, Detroit" in pencil, lower right.
In 1932, Lucienne Bloch worked with Diego Rivera on the "Industry" murals at the Detroit Institute of Arts. She was also accompanying and caring for her close friend Frida Kahlo, who had a miscarriage at the time.