Diego Angulo Íñiguez (1901–1986) has long been the art historian most often hailed as a “master,” both in Spain and Latin America. This can be explained not only by his work in teaching and his decisive contributions to the study of Spanish and Latin American art history, but also by the posts and jobs he has held in leading institutions devoted to art historical research and dissemination: director of the Instituto Diego Velázquez (CSIC) and its journal Archivo Español de Arte, director of the Museo del Prado, and director of the Real Academia de la Historia, among others.