Katherine Nash (1919 – 1982, Minneapolis) began producing computer-generated artworks in the late 1960s. She developed ART1 at the University of New Mexico with electrical engineer Richard Williams in 1968, as a ‘computer program for artists’. They also coauthored Computer Program for Artists: ART 1 (1970) introducing different possibilities to use the computer as an artistic tool. Nash collaborated with Ronald Reichenberger to develop a second version of the software, ART 2 at the University of Minnesota in 1970. Its features included a ‘polar coordinate generator’ system that enabled curves or sine waves to be generated from a fixed point. Untitled (1971) is the result of an accumulation of typographical signs, printed in different densities and colours.