This book, "Circle of Isis" was earlier printed by the Publisher, Llewellyn Publications, as "Invocation of the Gods" back in the early 90's. In the previous volume, there were a good number of illustrations of the various deities, as well as other projects for those interested in the Egyptian religion. This edition has omitted almost all of this, and the book is not improved since Ellen Cannon Reed passed away a few years ago. For the record, in among the university-level Egyptology books, I still have my copy of "Invocation of the Gods".
I do not know all of the details surrounding this book's being reprinted, but was fairly well acquainted with the author, the late Ellen Cannon Reed, via the very fledgling online pagan community on IRC Undernet channels #witchcraft and #wicca. She and I talked at length about her books. In among some of our more animated (and extremely heated) discussions about how the use of shwabti figures were not intended for the living as some sort of Egyptian "voodoo dolls", she confided to me that she felt Llewellyn pretty much screwed her over on this book - and that it wasn't what she wanted it to be. She further said that the editorial staff put it in and out of print so fast that she really didn't make all that much and as a result she was extremely bitter over it. It is possible, however, that Llewellyn, never one to turn down potential markets, and the "hotness" of all things Egyptian surrounding the time of this book's re-release under a new name.I sincerely hope that Ellen was able to get something out of it at the end of her life when leukemia overtook her at last.
This book is not perfect. Ellen never claimed to be any sort of authority on the subject of ancient Egyptian religion. She loved the Egyptian gods and culture and always said that it had been a labor of love for her. Given how much she loved Isis (Aset) and the other Gods, as well as her willingness to be out there for the younger generation of Pagan seekers, perhaps folks could forgive the shortcommings of the book - which to someone like me who is an Egyptian reconstructionist, would say that there are quite a few. It gives someone a starting place and sooner or later, that seeker will be exposed to others who have similar interests and they will find other books that will give more info on a spiritual system that is very complex and takes several years to understand and to master.