In 1986, Nelson George wrote a book about a young quintet at the height of their popularity. Cool It Now: The Authorized Biography of New Edition, is no longer in print.
Information about this group is hard to find, and 17-year old profiles are better than nothing. George was gracious enough to allow me to post this book on my New Edition tribute site, NE20.com. I'll be posting this book chapter-by-chapter over the next few weeks. If you're interested, take a look.