Bolton, Herbert E. 1917. The Mission as a frontier institution in the Spanish-American colonies, American historical review, Vol. 23, pp. 42-61

Bolton, Herbert E. 1917. The Mission as a frontier institution in the Spanish-American colonies, American historical review, Vol. 23, pp. 42-61, Box: 8, Folder: 36. Campbell W. Pennington Papers, 33036864. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/279311 Accessed September 26, 2026.