Thanks to both of you for taking the time to read my book, which is more important to me than the money I make-- though since I just found out my summer school teaching job is gone because not enough students signed up for my history class-- if you could convince 4,000 of your friends....
P.S. I think the version on Google books is of the first edition and has some typos and regrettable formatting errors. You can download about half the book free at smashwords and won't have to put up with that crap.