Annalisa Crannell is professor of mathematics at Franklin & Marshall College. Marc Frantz is a research associate in mathematics at Indiana University. He holds a BFA in painting from the Herron School of Art and an MS in mathematics from Purdue University. Fumiko Futamura is professor of mathematics at Southwestern University and is an artist. Frantz and Crannell are the coauthors of Viewpoints: Mathematical Perspective and Fractal Geometry in Art (Princeton).