Patentes y comunicaciones que se refieren a la Tarahumara

Patentes y comunicaciones que se refieren a la Tarahumara, Box: 7, Folder: 2. Campbell W. Pennington Papers, 33036864. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/279252 Accessed September 25, 2026.