Allan d'Arcangelo, Landscape, 1968. Acrylic on canvas, 54 x 48". Courtesy of Willem Baars Projects.

John Houck, Accumulator 310, 3 Colors #B2837A, #3C4DCE0, #3419D9C, 2017. Creased archival pigment print, each: 32 3/4 x 26 3/4" (framed). Courtesy of Marianne Boesky Gallery. 

Gerold Miller, Verstärker 17, 2016. Aluminium lacquered, 33.7 x 9.6 x 10.8". Courtesy of Galerie Nikolaus Ruzicska.

Tony Smith, Tau, 1961–62. Steel, painted black, 14 3/4 x 23 x 14 1/2". Courtesy of Pace Gallery, Seoul.