Thank you for posting this!
Mr. Apuzzo’s blog has thoughtful articles/posts on the Natural Born Citizen issues. He includes very useful links and citations to authoritative sources
Link: http://puzo1.blogspot.com
And yes, Mario's site has lots of information on the subject.
As does one of his contemporaries, Leo Donofrio. His site is also a wealth of historical information based on historical documents.
Another is from a group of law students (who themselves found some of the original documentation), the Undead Revolution
Those sites offer great content on the issue, based on historical facts sourced by actual documents and information.