The Institute of Music has published the fourth issue of the online journal Archival Notes: Sources and Research from the Institute of Music. The journal contains four articles of analytical, historiographical or philological nature focused on documents held in the archives of Alfredo Casella, Gian Francesco Malipiero, Franco Oppo, Ottorino Respighi, Giovanni Salviucci and Roman Vlad. The last section, “Documents and Reports”, describes an unusual defensive memory of Malipiero written in 1945.