The only book I've read, and it was fabulous was Edward F. Roberts, Andersonville Journey, the Civil War's Greatest Tragedy. It is new as it was published in 1998. It is poorly edited, but it contains a great deal of information, and tries very hard to not take sides. It contains information regarding the causes of the problems, the history behind the list, the trial, making the area a historical site, and even mentions that there is an annual reunion. I found it to be a great book.