First time chiming in on this thread.

It almost sounds like what is needed is a "graphical wiki" where larger area maps are hot-linkable to more detailed maps, and so on... Or even like those map books of street maps where the NSEW pages "point" to the next map in that direction... Just being able to geolocate every map, providing the lat/long of each corner as well as the projection would go a long way to make this workable.

-Rob A>