The National Library Service or Servizio Bibliotecario Nazionale (SBN) is a network of state, local, and academic libraries, and its online portal can help you:
The types of materials cataloged in SBN include:
Because SBN is a state library network, don't be surprised to find early editions and older materials there: it's a great tool for historical research. SBN also offers an English-option interface. Che fortuna! (How fortunate!)
For more information on how to use SBN click here.