Fake Letter to Draw Someone Out...

Hello. I am adopted and am trying to locate my birthfather. I have a list of possible addresses and would like someone to come up with some kind of letter that would make the person WANT to respond. Basically, I'm trying to find out if this person lived in a certain area during a certain time period. The man is also african-american, so something that would relate to that and help distinguish which one's could be my father. I just need something, some kind of creative idea to draw him out.