You can look in the TTM address bank on The Bench, but I use this site. You can have a free trial, but it's very limited. It will show you recent successes, but you don't have access to the search feature. For $12 a year for full access I think, it's a great deal. There are also address books (eg Smalling), but I like the site I mentioned best because it's an online community and you can see if the person you're sending to has a reputation for signing or if he won't sign at all so you won't waste your time. Good luck!