Anne, welcome to Helpful Gardener!
Pete28, in my kitchen right now, checked out from my local branch of the public library, is (take a deep breath) The Organic Gardener's Handbook of Natural Insect and Disease Control: A Complete Problem-Solving Guide to Keeping Your Garden & Yard Healthy without Chemicals (Rodale Garden Books, 1992, ed. by Barbara W. Ellis and Fern Marshall Bradley, 534 pp.).
Many photographs and botanical illustrations of plants and insects, plants suffering insect/disease damage, excellent index (35 pages of index alone).
I just may have to look for a "deal" on this one on the used market.
Pete28, maybe your library has or can borrow a copy for you? This book is both incredible and incredibly well organized.
Anne, maybe browsing the threads here at Helpful Gardener would give you insight into the common questions/problems/situations people deal with when pursuing organic gardening methods.
I would also (if it were me in your enviable position) check with the Webmaster to make sure he's amenable to his site being "mined" for this kind of information.
I'm sure everything you're doing is on the up and up, but as a technical editor, "fair use" issues are never very far from my mind.
USDA Zone 9, Sunset Zone 17