Abstract
With the arrival of functionaries and friars from different orders to grounds in Puebla, books are introduced. Franciscans, Dominicans and Jesuits basically, establish colleges and monasteries, with very well provided libraries. The spreading of sciences and humanities make of Puebla the most outstanding educational center of viceregal Mexico. Men like Juan de Palafox y Mendoza, Francisco Fabián y Fuero, Andrés de Arce y Miranda, Eguiara y Eguren, José Mariano Beristáin, author of the first bibliography written in Spanish (the Northern Hispano American Library), Miguel Guridi y Alcocer, and other characters not less noteworthy, turn the city of Puebla into what it is nowadays: the second biggest bibliographic collection of the Republic. Nevertheless, as the years go by, the carelessness and the mortmain free decrees of the Reform laws, affected the bibliographic repositories of monasteries, colleges, cathedrals and institutes of Puebla. The Palafoxian Library, for example, requires specialized personnel to perform a rescue, inventory and classification labor.