Correspondence to Philip Henderson from unknown sender at the Centro de Estudios Pedagogicos Hispanoamericanos

Correspondence to Philip Henderson from unknown sender at the Centro de Estudios Pedagogicos Hispanoamericanos, Box: 2, Folder: 104. Personal papers of Philip L. Henderson, PP 512. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/395805 Accessed December 25, 2025.