I didn't mean a physical paper phone book: www.superpages.com, for example. It wouldn't surprise me if there was no listing, but it is still what I would try fi

I didn't mean a physical paper phone book: www.superpages.com, for example. It wouldn't surprise me if there was no listing, but it is still what I would try first. I note that in another comment, you mentioned that you tried the bank, but they wouldn't help if it wasn't found in the branch. I would have been tempted to leave it in the branch to be found by someone else. :) I guess that leaves the police. They probably stand a better chance of tracking someone down.