Untitled (Tall Black/Amber Polyester Resin Wedge), 1968

Created in 1968, this monumental cast polyester resin sculpture belongs to Peter Alexander's earliest and most celebrated body of work, produced during the formative years of California's Light and Space movement. Inspired by the translucent qualities of industrial polyester resin, Alexander transformed a material commonly used in Southern California's aerospace and boat-building industries into a new sculptural language centered on light, atmosphere, and perception. The sculpture's soaring vertical form emphasizes both physical presence and visual immateriality, appearing to shift in density as changing light passes through the resin. Its restrained geometry encourages viewers to experience the work spatially, revealing subtle variations in color and transparency from every angle. Created at a pivotal moment in Alexander's career, the sculpture exemplifies his groundbreaking contribution to postwar American sculpture and his enduring exploration of the relationship between object, light, and space.