{"value"=>"<p>Sub-series 3a contains correspondence pertaining to the Mannes College of Music; Queens College; Structural Hearing; Der Dreiklang; family correspondence (Salzer, Wittgenstein, and extended family); Salzer's ownership of manuscripts; a proposed publication of a lecture; and correspondence with a group of theorists put in one folder by Salzer containing letters by Oswald Jonas, Ernst Oster, Victor Hammer, Franz Lichtenegger, and Michael Kassler.</p>"}