The Age-Grade Status of the Rural Child in New Mexico Public Elementary School, 1931-1932. Issue of Educational Research Bulletin 1, no. 1 (November 1932). New Mexico State Department of Education.

The Age-Grade Status of the Rural Child in New Mexico Public Elementary School, 1931-1932. Issue of Educational Research Bulletin 1, no. 1 (November 1932). New Mexico State Department of Education., Box: 67, Folder: 6. George I. Sánchez Papers, 23866736. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/541273 Accessed September 26, 2026.