Jessie T. Pettway, 'Bars and String-Pieced Columns', 1950s. Cotton, 95 x 76 in. Fine Arts Museums of San Francisco, museum purchase, American Art Trust Fund, and gift of the Souls Grown Deep Foundation from the William S. Arnett Collection. Artwork: © 2017 Jessie T. Pettway / Artists Rights Society (ARS), New York