The artworks, titled “Camel VI,” “Camel VII” and “Camel VIII,” are by Nancy Graves (1939-1995), who made them when she was still in her 20s and married to the formidable sculptor Richard Serra; her supporters claimed she was later excised from his biography. She and Serra were both post-Minimalists, but her camels, with their bulges and mangy hair, are the opposite of his virile walls of Cor-Ten steel. He found a way forward through industrial materials, whereas she looked to nature, and her camels, which she stuffed with foam and covered with patches of actual skin (sheep and goat skin only), replace the chill of abstraction with a monument to animal warmth.