Polytechnic High School – Hearing on Cancer Risks at Schools: Notes, 1999 October 14-21, id17696, Box: 42, Folder: 7. Tom Hayden Belmont Learning Complex Investigation Collection, URB-BLC. Special Collections & Archives. https://findingaids.csun.edu/repositories/2/archival_objects/91867 Accessed June 10, 2026.