Eric Foner at The Nation:
Douglass’s current status as a national hero poses a challenge for the biographer, making it difficult to view him dispassionately. Moreover, those who seek to tell his story must compete with their subject’s own version of it. Douglass published three autobiographies, among the greatest works of this genre in American literature. They present not only a powerful indictment of slavery, but also a tale of extraordinary individual achievement (it is no accident that Douglass’s most frequently delivered lecture was titled “Self-Made Men”). Like all autobiographies, however, Douglass’s were simultaneously historical narratives and works of the imagination. As David Blight notes in his new book, Frederick Douglass: Prophet of Freedom, some passages in them—especially those relating to Douglass’s childhood—are “almost pure invention,” which means the biographer must resist the temptation to take these books entirely at face value.
more here.