15-ish years ago, Darren and I were the guests of honor at HeroCon in Baltimore.
They had a big table (or maybe even two) covered with books. As per the rules, whenever we'd finish running a game or speaking on a panel, we'd go up and grab a few books.
I saw one book under a few others that was written by a friend of mine from high school. It had a sticker on the front that said Autographed Copy. And the sticker was from a bookstore back in my hometown, 600 miles away.
I picked it up and looked inside to see the autograph, and it was autographed to me! Using my nickname from college. Couldn't have been any other New Wave Dave.