“Once upon a time, sixty years ago, a little girl lived in the Big Woods of Wisconsin, in a little gray house made of logs,” Laura Ingalls Wilder wrote. This humble introduction—penned on a dime-store tablet at Rocky Ridge Farm—opened the first book in what would quickly become her internationally acclaimed Little House series. Nearly a century later, throngs of literary fans visit this sprawling Mansfield, Missouri, property to explore its grounds, homes, and museum.