I am obviously not doing schoolwork but am cruising the Internet. I read Bob Greene's article on the Slave Narratives, a series of interviews of former slaves taken in dictation during the 1930s by the WPA.
Bob Greene is an excellent storyteller and this article is no different. I did some searching and some of the narratives are available online - here and here and here, for starters.
Since the stories were taken down 65+ years after the Civil War, the tellers were old - and very young when they were slaves. Very much worth reading.