Andy Warhol's 1978 Oxidation Painting Series in The Andy Warhol Museum Collection

In 1978, Andy Warhol created a piece called Oxidation Painting, which features twelve panels and measures 48 by 49 inches. He used acrylic and urine on linen for this work. It’s part of the Founding Collection at The Andy Warhol Museum in Pittsburgh, made possible by a donation from The Andy Warhol Foundation for the Visual Arts, Inc. As of 2010, the copyright belongs to The Andy Warhol Foundation for the Visual Arts and the Artists Rights Society (ARS) in New York. This was noted on artcritical.com on June 21, 2010, at 5:11 pm. The artwork highlights Warhol's unique approach to materials in his later years, blending organic components that challenge traditional painting methods.