More than 150 million Americans have seen Ken Burns's documentaries on the Civil War, baseball, and jazz. With their signature blending of images and interviews, Burns's series have redefined documentary television--and no one, before or since, has made history so popular. Gary R. Edgerton takes the full measure of Burns's accomplishments--with an inside look at the workings of Burns's Florentine Films production company, a genealogy of Burns's style...