American sculptor Deborah Butterfield (b. 1949) is known most for her sculptures of horses made with salvaged materials. She started working on these in the 1980s, and the sculptures served as surrogate self-portraits reflecting her own inner emotions and state. Her time-consuming process and the fact that she works on them only in the winter means a work can take 3 to 5 years to complete. Her works can be found in dozens of major American art museums including the Metropolitan Museum of Art, Museum of Contemporary Art/Chicago, and the Whitney Museum of Art.