Gonzalez, Gilbert G. "Intelligence Testing, Race, and Class In the Progressive Era." N.p., undated

Gonzalez, Gilbert G. "Intelligence Testing, Race, and Class In the Progressive Era." N.p., undated, Box: 173, Folder: 7. Julian Samora Papers, 24426265. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/389117 Accessed September 27, 2026.