Fantastic new books!
Complementary and Alternative Medical Lab Testing is chock full of references for over 100 diseases.
Nutritional Genetics is also a referenced resource with sections on over 100 diseases.
Great Health Quotes has wonderful quotations about health, healing, disease, doctors, and medicine, and it's FREE.
A Brief Introduction to Naturopathy and Naturopathic Medicine describes the history and modalities. It's also FREE.