I received and read the first of the two Ames books, "Fishbugs." It is an absolutely beautiful book; the photography of the insects included in it is amazing. That my wife found it for only 15 dollars is a bonus, too.
This book is not, however, one that will actually lead you through the hatches. It does kind of generalize the order of appearance of the flies; but at least in my area, the order is somewhat different. Missing entirely is perhaps the most prolific hatch of all: E. invaria, the "big" sulphur. Ames does not tell the size of the flies either so that a tier-flyrodder might benefit. But, Ames does not really claim this to be a streamside guide for matching hatches and tying the flies that match the real ones.
The book is really a wonderful display of the beauty of the flies that Ames has photographed. If you're looking for a book that shows the beauty and the characteristics of various flies w/o telling you how big they are (you can find this information in a lot of other places), "Fishbugs" is a lovely book.