Nicolas Calas. "Continuance: On the Possibilities of a New Kind of Symbolism in Recent American Painting and What Such Symbols Could Possibly Mean". In Dancing around the Bride: Cage, Cunningham, Johns, Rauschenberg, and Duchamp (Carlos Basualdo and Erica F. Battle, eds. Philadelphia, PA: Philadelphia Museum of Art, 2012): 47-51.
ISBN 0876332424; 9780876332429
Originally published in ARTnews 57.10 (Febr. 1959): 36-39.