In 1957, Bob Zielsdorf is thirteen and living an ordinary middle-class suburban existence in York, Pennsylvania. On a trip to Massachusetts to visit a friend, he meets fourteen-year-old Fran Jordan. Though they spend less than an hour together (admittedly, an hour that includes some innocent kissing, thanks to a local variation on Spin the Bottle), they agree to write. Remarkably, they do, beginning a correspondence that will last for eight years, encompass hundreds of letters, and end with an enduring marriage. Drawn from their collection of over four hundred perfectly preserved personal...