Lebbeus Woods, Concentric Field, from the series Centricity, 1987; graphite on paper; 23 in. x 24 in. (58.42 cm x 60.96 cm); Collection SFMOMA, purchase through a gift of the Members of the Architecture + Design Forum, SFMOMA Architecture and Design Accessions Committee, and the architecture and design community in honor of Aaron Betsky, Curator of Architecture, Design and Digital Projects, 1995–2001; © Estate of Lebbeus Wood