John Chamberlain's use of auto parts as a material suitable for sculpture, and his use of compression as a technique, came to define the signature elements of the artist's work beginning in the late 1950s. In Scull's Angel, what at first appears as an explosion of violent, uncontained energy is in fact a unitary field of tightly knit, baroque folds of steel. The title of the piece combines a reference to the New York taxi and limousine baron Robert Scull, a prominent collector of Pop art and sometime drinking companion of the artist, whose taxicab fleet was called "Scull's Angels...