The research project aims at the development of a digital library for handwritten documents of artistic and literary culture in XIX and XX centuries. The goal is to provide access to contemporary archives of documents related to well-known art historians: Giovan Battista Cavalcaselle, Adolfo Venturi, Ugo Ojetti, Giulio Carlo Argan and Cesare Brandi. All the sources, constituted by unedited and edited archival documents, are stored in a relational database mapped to an ontology. The system has been designed and implemented by Media Integration and Communication Center, Fondazione Memofonte, Scuola Normale Superiore of Pisa, University of Florence and University of Udine.