Richen, Enrique. Aviso sobre la vida y muerte del Padre Enrique Richen y Pedro Tomás Tello S. J., 1759 February 4.

Richen, Enrique. Aviso sobre la vida y muerte del Padre Enrique Richen y Pedro Tomás Tello S. J., 1759 February 4., Item: WBS 1598. W. B. Stephens Collection, 30605856. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/280579 Accessed September 25, 2026.