Left-to-right. Susan York, 1:1 Lannan Floating Column (eye level from the floor) @ NM Museum of Art Centennial 1917 – 2017, 2017. Graphite pencil on paper, 48 × 48 1⁄2 in. Courtesy of the artist and Exhibitions 2d, Marfa. Susan York, Floating Column, 2008. Solid graphite, 168 × 10 × 9 5⁄8 in. Lannan Art Collection. Photograph by Jeff Medinas.