In this week’s audio book club, Yale historian David Blight talks about the significance of the hit novel The Killer Angels with Emily Bazelon and David Plotz. Published in 1974, the book won a Pulitzer Prize but didn’t become a best-seller until two decades later. What’s its enduring appeal? Is it pro-war or anti-war? Did it rehabilitate the reputation of Confederate commander James Longstreet at the expense of the beloved Robert E. Lee?