De Profundis, Staple Bound, "For Voices And Three Instruments", id20343, Box: 23, Folder: 12, 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/97366 Accessed June 19, 2026.