Even if a Facebook user sets their friends list to private, an investigator might still be able to see part of that list. Check out the blog post of Shay Priel of The CyberInt Group, that reveals that even if a friends list is set to be private, that doesn’t exclude the friendship from showing up on a friend’s news-feed, on a list of mutual friends. As the axiom goes, a “An enemy of my enemy is my friend, but a friend of my subject is a backdoor into learning about their activities through Facebook …” Or something like that.
For access to a list of publicly available records, searchable by state check out this website. http://www.publicrecordsources.com