Correspondence and other materials pertaining to the Clabe Hangan concert held during the bicentennial celebration., 1975, Series 2 , Box: 1, Folder: 30. City of San Bernardino Bicentennial Commission records, SC-027. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/15085 Accessed December 15, 2025.