I have uploaded, in the books and articles files section of the new site, the bibliography of "Diccionario Biografico del Occidente Novohispano Siglo XVI" being published by the Universidad Autonoma de Zacatecas. The series is authored by José Enciso Contreras and Thomas Hillerkuss.
The attached file is the bibliography of published works that they have used as sources to compile their diccionary. It is a rather exhaustive list of authoritative published works on the early history of Nueva Galicia and the people who lived in the region in the 16th Century.
The first two volumes (with names beginning in A-C and D-G) have already been published and the third volume is shortly forthcoming.