Acheron, Spiral Bound, [2 Soprano, Alto, Clarinet, Trumpet, Piano, Cello], id20329, Box: 23, Folder: 8, 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/97352 Accessed June 19, 2026.