Polytechnic High School – Cancer at Poly High and Towne Elementary Schools: Correspondence, 1999 October 8-14, id17695, Box: 42, Folder: 6. Tom Hayden Belmont Learning Complex Investigation Collection, URB-BLC. Special Collections & Archives. https://findingaids.csun.edu/repositories/2/archival_objects/91866 Accessed June 10, 2026.