TriPod: New Orleans at 300 returns with another edition of TriPod Xtras. Host Laine Kaplan-Levenson and Dartmouth history professor Rashauna Johnson have talked before for the show. This time, their conversation was taped live during the 2017 Organization of American Historians conference that took place earlier this year. The two discussed Johnson’s first book, Slavery's Metropolis: Unfree Labor in New Orleans during the Age of Revolutions , which won the 2016 Williams Prize for the best book