Third edition of the work first published in Milan by Enrico Casanova in 1904 and reprinted in 1930, it lists all the fiefs still existing at the end of the Feudal system (1796) in the State of Milan (Duchy of Milan, Principality of Pavia, County of Como, County of Cremona, County of Lodi). The deeds of concession are also mentioned, with dates, names of both the investor and of the invested, order of devolution and other pieces of information derived from the original documents: a reference book for everyone interested in the history of the Lombardy of Old.