The Juilliard String Quartet is a classical music string quartet founded in 1946 at the Juilliard School in New York. The original members were Robert Mann and Robert Koff on violin, Raphael Hillyer on viola, and Arthur Winograd on cello; Current members (as of 1997) are Joel Smirnoff and Ronald Copes on violin, Samuel Rhodes on viola, and Joel Krosnick on cello. The quartet is currently quartet-in-residence both at the Juilliard School and the Library of Congress.