Already have an Atlas, topo CD set of Northeast, Garmin GPS Vista with topo/street maps.  Once I found these Gazetteers, I bought one for every state in New England and New York.  Each of the above provide different levels of information and alternative routes and access to various locations, often places with no direct road or trails.  The gazatteers provide fast detail access to areas in question over the GPS or atlas and are invaluable to me while in the vehical.  Although, the GPS is my lifeline away from the vehical, the gazatteers are large and not weather resistant.