Ross F. Littell
Ross F. Littell (July 14, 1924 – April 17, 2000) was an American textile and furniture designer known for his practical, innovative, and minimalist style as part of the Good Design movement of the 1950s. His three-legged T-chair, designed in 1952 with William Katavolos and Douglas Kelley, is part of the permanent collections of the Metropolitan Museum of Art and the Museum of Modern Art in New York, along with the Art Institute of Chicago.
Reference: Wikipedia