I have both books and enjoy them both for different reasons. Terry Rioux's book is a classically done biography with a lot if detail on De. Kristine M Smith's book is certainly more personal and is filled with anecdotes. A completely different perspective - more like a personal letter. I think that's what I liked about it. It is getting an update and the newer version is due out in the next month or two. I haven't decided if I am going to pick that one up, yet. Hope this helps.