David Schwartz (violist)
edit"In 1967-1971 the Yale Quartet recorded the most probing set of Beethoven late quartets to have come out of the USA, so far."
Tully Potter "The concert explosion and the Age of Recording" in the Cambridge Companion to the String Quartet, ed Robin Stowell. (Cambridge Companions to Music.) Cambridge: Cambridge University Press, 2003, p.90