In 1968, Mel Bochner began to experiment with rubbing blue carpenter’s chalk into the porous surface of a wall. This process produced a painting inseparable from the wall itself. Unlike murals, these were not pictures that created an illusion that the wall was not there. Instead, they made the wall part of the work, highlighting its textures and play of light and shadow. Collector Suzanne F. Cohen commissioned Bochner to realize one of his blue pigment works, Random Lines, in 2002. He adapted its composition to the shape of the wall, where it remained for the rest of her life. Here, to continue to honor Cohen in 2021, Bochner has imagined the work anew, reversing its areas of blue pigment to conjure a ghost image of the work as it was in her space.