When’s the last time you put pen to paper and wrote a letter? Not an e-mail, not a quickly jotted memo, but an actual hand-written letter, with the date at the top, a more or less formal term of address (you can never go wrong ...

I don’t claim to understand very much about the economics or history of the downturn that began around 2008. What little I do know I largely attribute to the books I’ve read about it, both fiction and nonfiction. Many authors h...