Leonard, Olen E., and Helen W. Johnson. "Low-Income Families in the Spanish-Surname Population of the Southwest." Economic Research Service, U.S. Department of Agriculture, Agricultural Economic Report No. 112, 1967 April

Leonard, Olen E., and Helen W. Johnson. "Low-Income Families in the Spanish-Surname Population of the Southwest." Economic Research Service, U.S. Department of Agriculture, Agricultural Economic Report No. 112, 1967 April, Box: 180, Folder: 13. Julian Samora Papers, 24426265. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/389314 Accessed September 27, 2026.