Earthquake and Seismic Safety – Seismic Safety Commission: Letter from Tom Hayden, Letter from Richard McCarthy, 1999 August 17, 25, id13777, Box: 14, Folder: 10. Tom Hayden Belmont Learning Complex Investigation Collection, URB-BLC. Special Collections & Archives. https://findingaids.csun.edu/repositories/2/archival_objects/91049 Accessed June 25, 2026.