found: Beethoven, L. The late quartets [SR] c1983 (a.e.) labels, container (The Cleveland Quartet) program notes (Donald Weilerstein, Peter Salaff, violins ; Martha Strongin Katz, viola ; Paul Katz, violoncello)
found: Library of Congress Music Division concert, 1980-12-05 [SR] 1980: program notes (Donald Weilerstein, Peter Salaff, violins ; Atar Arad, viola; Paul Katz, violoncello)
found: New Grove dictionary of American music, 1986 (Cleveland Quartet; founded 1968 at Marlboro Festival, Vermont; Atar Arad replaced Martha Strongin Katz in 1980)