The present archive allows the access to the documents on-line, divided into:

photos that includes all the photographical images: the ones found through the archival research and the ones published in some texts with the references to the archival descriptions  and the press-marks of the texts for their availability;

drawings that include all the cartographic material gained through the archival research or published and data for their access in situ;

texts that allow a fast consultation of all the published volumes and articles, with the information for the their access and a brief description of the contents.