 Philosophy of science developed a robust presence at Universidad Nacional Autónoma de México (UNAM), a major institution at the forefront of intellectual life in the country and the Spanish-speaking world. The discipline gained strength in the 1960s and early 1970s through the efforts of prominent faculty members, especially Fernando Salmerón, Luis Villoro, and Alejandro Rossi who encouraged rigor and clarity in philosophy and provided scholarship support to enable students to do post-graduate work in Europe, the United Kingdom, and the United States. Together they founded the journal Crítica in 1967, a choice venue for philosophy in Latin America and Spain. An influential work by Salmerón, La Filosofía y las Matemáticas, came out the following year. Major international seminars and meetings became a regular feature at UNAM’s Institute for Philosophical Investigations (Instituto de Investigaciones Filosóficas—IIF), which in the 1970s and 1980s hosted some now legendary seminars and short courses led by world-class figures. One of these international seminars focused on the history and philosophy of science, started by Mario Bunge (Argentina and Canada). IIF became the host of many spirited philosophical debates, those between Bunge and Héctor-Neri Castañeda (Guatemala and the United States) being among the most prominentely remembered. With Bunge’s help, in 1976 an epistemology forum was established—Asociación Mexicana de Epistemología. At the beginning of the 1970s, Mario Otero (Uruguay) formally joined IIF with a considerable effect on the studies of the philosophical history of science.