Civil War\Slavery Readings

For those keeping track, the next book is Narrative of the Life of Frederick Douglass. I read it as a kid and in college, but I feel the need to go back. One disappointment is that, as much as I can tell, there isn't a really solid recent biography on Douglass. Do I have that wrong? Anyone read a good one?

This article available online at:

http://www.theatlantic.com/entertainment/archive/2009/07/civil-war-slavery-readings/21300/