Complete Bibliography These sources are split between the pages for Polyforum Cultural Siqueiros and David Alfaro Siqueiros Brenner Anita 1929 Idols Behind Altars New York Payson Clark Ltd pp 244 259 Folgarait Leonard 1987 So Far From Heaven David Alfaro Siqueiros The March of Humanity and Mexican Revolutionary Politics New York Cambridge University Press Hurlburt Laurance 1989 The Mexican Muralists in the United States Albuquerque University of New Mexico Press pp 210 213 ISBN 0826311342 Hurlburt Laurance 1976 The Siqueiros Experimental Workshop New York 1936 Art Journal 35 3 237 246 doi 10 1080 00043249 1976 10793284 Polyforum Siqueiros Conocenos Nosotros polyforumsiqueiros com mx Retrieved 2015 04 06 Riding Alan June 20 1971 Siqueiros Ten Years and a Polyforum Later New York Times D22 Rogovin Mark 1969 The March of Humanity An Expression in Public Art Rhode Island School of Design Alumni Bulletin 26 Schonberg Harold November 21 1968 Siqueiros 72 Doing Biggest Mural New York Times Su rez y Su rez Manuel 1975 Polyforum Cultural Siqueiros Mexico M xico Poliforum Siqueiros What is SFA Siqueiros Foundation of the Arts siqueirosfoundation org Retrieved 2015 04 10