The Don Kemp biography is now listed on the web page of Spiritualist Resources (http://www.spiritualistresources.com/cgi-bin/books/index.pl) with a short description of the book and a quote -- the Prologue in its entirety. 
Check out the website, it's a great resource for general info, groups, mediums, special events, retreats, courses, gifts (not to mention BOOKS and dvds etc): www.spiritualistresources.com