Detailed map or list of streets/alleys of Palermo?

[sertolicell]

Can someone provide information on a detailed map, list, book or similar on the streets and alleys of Palermo, preferably covering 18th and 19th Century topography?

I am looking for some sort of standard tome to be able to locate where exactly my ancestors lived when consulting "Numerazione delle anime" parish censuses. It is fairly limited what Google can provide.

For example, right now I am looking for a location named "Vatta del Dirubbo" or something similar (parish of Sant'Ippolito al Capo), and since the family "disappears" in the following censuses it would be of great value to pinpoint the nearest adjacent parish to start looking for the family there.

Thanks, Roberto