Starts out with index list with page numbers as for example I am on page 12 of the 742 page document:

http://oi58.tinypic.com/2w3rhh0.jpg

Say "conversion de indios tepehuanos" on page 86

I am looking for Huejuquilla El Alto

This is "registro de nuevo galicia" I found in the PARS website.

I need to remind myself also look for a "registro de zacatecas" in the PARS site.

Odd because when I enter that reference number it comes out differently that the original documet I am looking at. What I originally am looking at is this:

http://oi61.tinypic.com/25f4llw.jpg

And the way I found is I typed in google search:

Visita del obispado de Guadalajara y nueva población en el valle de Huejuquilla

And selected the one that is circle in green:

http://oi60.tinypic.com/nbqfeo.jpg

And it took me right to the 742 page document in the pars website

Now I see how to get to the registro de nuevo galicia:

Just copy and paste this reference number in the pars website: GUADALAJARA,230,L.3

Then go the the very last page on the list which is pg 31 and it is the last one.