author of how exceptional black women lead, wesley lowery, author of i can't kill us all and julianna mumbo, author of are we better off. on sunday at 1:15 p.m. eastern, pulitzer prize-winning historian david mccullough starts with warmer news anchor charles gibson about his collection of speeches on american principles. >> i began to think about the great presidents down the years who have been avid readers of history, many of them wrote history, including john kennedy. even those who didn't benefit have a college education like harry truman, read history all their life. i realized that it's essential to the role of a leader, whether it's the presidency or leadership of any kind. it's a cause and effect. history matters. >> go to but tv .org for the complete weekend schedule. this weekend cities booked were takes tv and american history tv to hyde park new york as we explore the history and literary life of a town that come to be synonymous with the story of franklin roosevelt eleanor roosevelt and the extended roosevelt family. saturday at noon eastern on the tv an exclusive interview wit