Kelly's has shared a very good tip, alot of people don't want us to know this stuff. +one Kelly! One more reason why LS is a great forum to research.
In any event if you decide to purchase a mailing list, be sure it is up to date. I know this as, I had made this mistake in the past, and ended up mailing to dead people, not a big deal normally, but could aggravate some family members (I did handle those calls)
and we wanna keep a good impression.