"Intensities For Piano" With letter [Note: Tape And Other Scores Cited In Letter Not In Mailing Envelope], id16922, Box: 12, Folder: 10, Item: 1. Library of the Institute for the Study of Women in Music Collection, SC-SWM. Special Collections & Archives. https://findingaids.csun.edu/repositories/2/archival_objects/97065 Accessed June 13, 2026.