Joint project between KU and the University of Costa Rica during the summer of 1970. Includes audio cassette tapes and interview transcripts. Interviewees' last names include Arguedas, Blanco, Chavarria, Echandi, Hunter, Ferrer, Morales, Masis, Vargas, Navarrete, Braun, Camacho, Carranza, Casto, Chavarria, Fait, Fournier, Gonzales, Mata, Monge, Odio, Peralta, Renauld, Solis, Volio, and Nunez.