Seyfried, J.E. Illiteracy Trends in New Mexico: Including Comparisons of Trends in New Mexico with Those in Certain Other States and the United States. University of New Mexico Bulletin, 240. Albuquerque: University of New Mexico Press, 1934

Seyfried, J.E. Illiteracy Trends in New Mexico: Including Comparisons of Trends in New Mexico with Those in Certain Other States and the United States. University of New Mexico Bulletin, 240. Albuquerque: University of New Mexico Press, 1934, Box: 82. George I. Sánchez Papers, 23866736. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/541518 Accessed September 27, 2026.