Stated plainly, if they hadn't stopped including the Translator's Preface with the KJV Bible there would be no KJV Only controversy today. Not only were the translators NOT KJV Onlyists they would have been appalled to see the irrational, legalism that their best effort of a translation using the best manuscripts of the time has become today.
Doubt me?
(and if you are a KJV-Onlyist I WANT you to doubt me - please, please, please doubt me!)
Great! Just read it, it's all there.
I am not a KJV-Onlyist and I use a number of today's most reputable English translations that are derived from the best manuscripts available to us today in my Religious Studies work and personal study. Why? Because I follow the clear admonitions given in the KJV Foreward by the translators.
I had already read it before buying this book (there are several good original and modernized online editions of it on the Internet) but this book does a great job of analysis and even provides probably the best, modernized version of the 1611 KJV forward that I have seen to date (it's an appendix at the end of the book).
Whether you are KJV-Only or not, I recommend this book. And if you are KJV-Only, I recommend it to you even more.