Nancy Lopez, my fourth cousin that I discovered through the Internet, has a fantastic website called My New Mexico Roots.
Here are just a few links that I think you should see on her site:
* Her pedigree chart
* The 1850 Census of Lemitar, New Mexico
* Dilegencia Matrimonials for the Armijo, Baca, and Lopez families.
* Early Lopez Settlers on the Rio Abajo
* Bernardo Miera y Pacheco's 1779 Map of New Mexico
...and many more resources.
By the way, Nancy is my fourth cousin through our 3rd great-grandparents Francisco Luna and Concepcion Sena.