GuidebookPlus is a Google Maps based index for travel guidebooks.
GuidebookPlus maps the page numbers of all the places in guidebooks, such as those published by Lonely Planet and Rough Guide. For example is you choose 'Lonely Planet: Italy' from the drop down menu and zoom in on Italy you can see the page numbers on the map relating to each location.
GuidebookPlus includes a number of other functions. If you want to buy a guidebook for your travels you can use GuidebookPlus to find which guidebook has the most places described in a certain area.
As well as quickly finding the location of places mentioned in guidebooks you can get the driving directions from one location to another, find accommodation, read Wikipedia articles and show only places of a given type of interest.