Stumbled upon this map from Bill Bell's "On the Road in Mexico" site. Doesn't include any in Baja, but tons on the mainland.
https://maps.google.com/maps/ms?msid=204999010401947411682.0004bdd20e0342d490edc&msa=0&ie=UTF8&t=m&ll=18.145852,-91.40625&spn=39.374673,56.25&z=4&source=embed&dg=feature
https://maps.google.com/maps/ms?msid=204999010401947411682.0004bdd20e0342d490edc&msa=0&ie=UTF8&t=m&ll=18.145852,-91.40625&spn=39.374673,56.25&z=4&source=embed&dg=feature