Linda Dalrymple Henderson is the David Bruton, Jr. Centennial Professor in Art History and Distinguished Teaching Professor at the University of Texas at Austin. She is the author of The Fourth Dimension and Non-Euclidean Geome­ try in Modern Art (1983; 2013) and Duchamp in Context: Science and Technology in the Large Glass and Related Works (1998). Henderson also curated the exhibition Reimagining Space: The Park Place Gallery in 1960s New York (Blanton Museum of Art, The University of Texas, 2008). She is currently at work on a book titled The Energies of Modernism: Art, Science, and Occultism in the Early 20th Century.