one need only google mormon in books area to find
The Mormon problem: an appeal to the American people : with an appendix ... By C. P. Lyford
http://books.google.com/books?id=6Ax...mormon&f=false
The true origin of the Book of Mormon By Charles Augustus Shook
http://books.google.com/books?id=k7k...mormon&f=false
for documentation,
The Mormon doctrine of deity: the Roberts-Van der Donckt discussion, to ... By Brigham Henry Roberts, Cyril Van der Donckt
http://books.google.com/books?id=6lJ...mormon&f=false
The Mormon puzzle, and how to solve it By R. W. Beers
http://books.google.com/books?id=fHU...mormon&f=false
Book of Mormon: is it from God? Lects By Martin Thomas Lamb
http://books.google.com/books?id=Lrk...mormon&f=false
Forty years in the Mormon Church: why I left it!
Richard C. Evans