Unofficial recordings on cassette tape of whole performances of plays and operas participated in by opera singer and Chapman University Artist-in-Residence Carol Neblett, from 1972-1995. These are likely unofficial recordings that Neblett had someone create during her public performances (as well as whole productions), with which she later used as reference.
Neblett, Carol, "Un ballo in Maschera - Metropolitan Opera - 2/19/83" (1983). Audio Recordings of Performances. 25.