Erin Negley writes: “In the James Buchanan Presidential Library, you’ll find an invitation to his Inauguration Ball in 1857. There are letters to and from Buchanan’s niece, Harriet Lane, whom some consider the first to be called a First Lady. There are documents that show the politics of a divided country. By the time Buchanan left office, seven states seceded and the start of the Civil War was weeks away. The newly digitized library is free and online at lancasterhistory.org.”