I've recently made a couple PBs for my use from online documents. Most recently the Compendium of the Catechism of the Catholic Church from:
http://www.vatican.va/archive/compendium_ccc/documents/archive_2005_compendium-ccc_en.html
The original document is Copyrighted: © Copyright 2005 - Libreria Editrice Vaticana
I think I would still be allowed to use the text from their publicly available site to make and use a Personal Book for myself, but I don't think I can post a public link to my version of their file. Perhaps I could email the file to anyone interested?
I created about 50 regular expressions to transform the online Vatican HTML into a nice Logos-ready document (headwords, orderly header tree, links to CCC, etc.). So I'm sure I could share these formulas/steps I wrote and you could use them yourself to make your own. So email me if you'd like either the recipe for transforming the HTML for Logos, or if you'd just like the docx (or HTML) I made.
Hopefully the regular expression cleanup I've done will also mostly apply to other Vatican documents. Next up will be Evangelii Gaudium...
-Michael