It's always cool to see reviews of Rock House Products on other web sites. I found a review of "The Only Chord Book You Will Ever Need" on Rose Garden Music Blog. Of particular note you won't need to read the review because The Old Man put it on video. What a unique concept I must add.
Click here for the review - http://rosegardenmusic.blogspot.com/2008/12/review-only-chord-book-you-will-ever.html