Ben mc grath has been a staff writer at the new yorker for nearly 20 years. In that time, he's written more than 200 stories about everything from the mafia to the ididerod. For the last few years, ben has been working on a project of an entirely different magnitude. It's a book, his first ind its, called riverman. The life story of a guy named dick conan who may just be the greatest american folk hero you've never heard of.