Abstract. ASPI is a project that aims at creating a digital library of historical documents of Italian Psychology and extending it with semantic data. The extension makes it possible to retrieve archival documents not only on the basis of archival metadata, but also according to the connections the documents have with specific activities of researchers, groups and institutions, as well as with more general events in the history of Italian Psychology. The paper provides an overview of ASPI and discusses the approach and workflow we adopted in its development. In particular, ontology modeling according to CIDOC CRM, ontology population and the prototyping of a semantic search and browsing portal based on the ClioPatria platform are introduced. 1