Oh wheew! I was getting a little worried there! Umm... I only have one book it's called " The Cure For All Diseases " It's written by Dr. Hulda Clark and is very informational (I guess you know that if you have already read it) I would like to know more about the other books before I buy one, I have really heard nothing substantial about any of them (if theres more than one) accept that there are some and that they are written by Hulda Clark , but does that necessarely mean that they heve more information? Don't know, haven't found out. Sorry. God bless!