I am in the process of trying to do the same.  Here is the information 
from the Univeristy of California library catalog system.  It looks 
like there is a copy at Bancroft at UC Berekely and another at the 
California State Library in San Francisco.  I know there is another at 
UT Brownsville...

 
Author  González-Leal, Mariano.  
Title Retoños de España en la Nueva Galicia : estudios histórica, 
antropológico, genealógico y biográfico sobre la población española de 
la zona oriental de la Nueva Galicia, desde su establecimiento en la 
región hasta nuestros días / por Mariano González-Leal ; prólogo del 
Baron de Covadonga.  
Publisher [Guanajuato, México] : Universidad de Guanajuato, Centro de 
Investigaciones Humanísticas, 1982 [i.e. 1983].  
Description v. : genealogical tables ; 23 cm.  
Note Includes indexes.  
Contents v. 2. Esquemas genealógicos: las familias genearcas. 
Diccionario de familias: Aceves - Gómez-Hurtado de Mendoza.  
Language Spanish  
Subject  Spaniards -- Mexico -- Nueva Galicia -- Genealogy.  
  Nueva Galicia -- Genealogy.  
Format Book  

UC Berkeley 
Bancroft F1296.9.S7 G6 1983 Circ status Bancroft Library closed Jun-Oct 
2005: bancroft.berkeley.edu/info/move/ 

California State Library 
Sutro CS108.N83 G65 1982 Circ status v.2 


--- In ranchos@yahoogroups.com, "Raymond Jauregui" <rayjaur@e...> wrote:
>
> Maria,
> 
> I am interested in trying to obtain a copy of the book "Retocos de 
Espaca en la Nueva Galicia" which you talk about in your response to 
Alicia, through the Interlibrary Loan System.  Can you give me more 
detail like, the publisher, catalog number, date published or ISBN 
number.  Also, the name "Retonos de Espana en la Nueva Galicia" sounds 
more like what the title should be?  I have similarly obtained a copy 
of the "Sagrada Mitra" .      
> 
> Ray
>