My favorite map of the world with its associated herb, ore, treasure, and etc., is
mapwow This is set up like the Google maps and you can zoom in or out to see exactly where each of the nodes spawn.
Using the Gatherer mod, you can generate similar data yourself for all the spawns you visit, which will show up on your in-game maps.
Edited, Jul 26th 2006 at 10:12am EDT by fledarmus