U.S. Department of Health, Education, and Welfare. "Health Improvement Activity in Rural Development Program Counties - Second Progress Report." AMS-231, 1958 March

U.S. Department of Health, Education, and Welfare. "Health Improvement Activity in Rural Development Program Counties - Second Progress Report." AMS-231, 1958 March, Box: 207, Folder: 1. Julian Samora Papers, 24426265. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/389967 Accessed September 27, 2026.