How to Find A Child Given Up for Adoption
I would say your best resource would probably be the adoption agency you went through when putting the child up for adoption. Or even just any agency could be a good resource for this, but it could also depend on what type of adoption was established a closed or open. I've seen people use private investigators to do this too. I would suggest making sure though that you are emotionally ready and prepared for what it would mean for both you and the adopted child should you attempt to reconnect.