[Aztlan] Google Earth Placemarks

[Hoopes, John W]

I'm assembling a collection of Google Earth placemarks for Mesoamerica, with locations and views of geographical features and well-known sites.  I have most of the Maya sites, but am seeking additional locations in central Mexico, west Mexico, the Oaxaca Valley, and elsewhere in non-Maya Mesoamerica.
 
Is there a good online source for geographical coordinates of Mesoamerican sites?  If you have some of these (with confirmed locations, hopefully from first-hand observations), I'd like very much to exchange and refine data.
 
Thanks!
 
John Hoopes