Sol LeWitt, Wall Drawing #73: Lines, Not Straight, Not Touching, Drawn at Random, Uniformly Dispersed with Maximum Density, Covering the Entire Surface of the Wall (detail), 2017. Black pencil, dimensions variable. First drawn by Sol LeWitt. First installation: Lucy R. Lippard residence, New York, March 1971. New Mexico Museum of Art, Santa Fe. Gift of Lucy R. Lippard, 1999. © Estate of Sol LeWitt. Photograph by Jeff Medinas.