Blakenzy, the answer is Yes and No.
C. Rodney James wrote/edited the 6th Edition.
Bill Chevalier did the 7th edition.
In reality they are a group effort.
For many years it was Dean Grennell was listed as author.
As were a great number of books, such as Gun Digest, published by Digest Books Inc.
Lately DBI has been listing the latest editor as the author.
Every few years DBI publishes a revised edition with new info. Whichis a good thing. While the second edition that P95 posted a pic of is a great book and I have a copy that is even more dog eared than his, there are a lont of things that have changed since then.
No, the procedures are still the same, but there are many more powder and bullet manufacturers around today and sadly a few have gone by the wayside.
I reccommend the latest version simply because it should be easy to find and there is a possibilty that someone brand new to reloading might get confused by the differences in powders and other components listed in the much older versions and what is available today.
I was sent an advance copy of #7 a few months ago. Perhaps Amazon hasn't caught up yet.