Around 4 500 drawings dating from 1964 to 2001 and consisting of:
- preliminary sketches;
- measured drawings (plans, elevations, sections);
- axonometric and perspective drawings;
- cadastral maps;
- photogrammetric drawings and watercolours;
- urban areas (historic centres);
- architectural structures (buildings, cemeteries, gardens, fountains);
- archaeological sites and monuments (theatres, amphitheatres, arches, tombs, temples); and
- mural paintings;
- building structures and elements (materials, drainage, plumbing) and their historical development;
- typological, structural and sociological analyses;
- archaeological research;
- conservation proposals; and
- conservation and restoration treatments.
These drawings were mostly produced during the ICCROM Architectural Conservation Course (ARC) Study Projects and Photogrammetric Studies, as well as during the Mural Painting Conservation Course (MPC) Study Projects and technical missions carried out by the Mural Painting Conservation Programme.
They document sites and monuments from all over the world, including countries such as Bulgaria, Brazil, Colombia, Germany, Greece, Iran, Japan, Montenegro, Spain, Tunisia, and many more. Particularly well-documented are Italian sites (Capua, Ferrara, Friuli, Pisa, Pompeii, Parma, etc.), as well as Roman sites and monuments (Ostia Antica, Domus Aurea, Ara Pacis, Pantheon, Arch of Titus, etc.).
The drawings are linked to textual and photographic records (correspondence, reports, hand-written notes, photographs) and also to scientific materials, such as heritage samples and cross-sections.
Only 300 drawings have been digitized. The collection requires archival processing and systematic digitization to make the entire collection accessible to researchers.