Just a quick question...?

Biography and autobiography is a good one because it can compare the same story from two different perspectives. The first is written by someone other than the subject whereas the latter is written by the person themselves. If you could find tow works you could show the differences in the books since only the second would be written from, personal experience. Also the autobiography would tend to leave out things that the author does not want to include such as indiscretions, love affairs, drug use etc.The former of course, may have been written without the subject;s collaboration in which case it will be a collection of stories, second hand accounts and observations.