Corwin, Arthur F. "U.S. Immigration Policy Towards Mexico: A Story of Ad Hoc Exemptions." University of Connecticut, undated

Corwin, Arthur F. "U.S. Immigration Policy Towards Mexico: A Story of Ad Hoc Exemptions." University of Connecticut, undated, Box: 165, Folder: 2. Julian Samora Papers, 24426265. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/388880 Accessed September 27, 2026.