The series Bibliothek des Deutschen Historischen Instituts in Rom (Library of the German Historical Institute in Rome) was established in 1905. It produces academic monographs and volumes of collected essays on Italian and German-Italian History from the Early Middle Ages until the recent past.

No longer a mere finding aid, the Repertorium Germanicum has become a complex register volume on church and curia history that, together with the sub-project Repertorium Poenitentiariae Germanicum, aims to meet ever increasing demands. This volume addresses new questions to both repertories.