Are you aware that the Mormon's Family History Library has microfilms of most of Naso's original birth, death, and marriage records from 1820 throught 1910 available for viewing at any of their US branches? They supply the equipment and anyone can have access to each film for a six week period at your local branch for something like $6/film.

One of my own lines comes from Naso and I was able to trace them back to the early 1800s using these films.

TPG