El Colegio de México, A.C. (commonly known as Colmex, English: The College of Mexico) is a prestigious Mexican institute of higher education, specializing in teaching and research in the social sciences and the humanities. It has one of Mexico's leading libraries. The campus is located in a purpose-built and architecturally striking building on the southern fringes of Mexico City, in Tlalpan borough. It arose from an organization of Spaniard exiles called "Casa de España en México" (House of Spain in Mexico). In march of 1939, Lazaro Cardenas named Alfonso Reyes to the presidentship of the "Casa de España en México". Reyes would be president of the "Colegio" until his death. Historian Daniel Cosío Villegas played an important role in its institutionalization and the Colegio's library bears his name.