Polytechnic High School – Hearing on Cancer Risks at Schools: Notes, Business Cards, October 1999-February 2000, id17694, Box: 42, Folder: 5. Tom Hayden Belmont Learning Complex Investigation Collection, URB-BLC. Special Collections & Archives. https://findingaids.csun.edu/repositories/2/archival_objects/91865 Accessed June 10, 2026.