If you are trying to do an elimination diet, rotation diet, or trying to identify and avoid cross-reactions, it can be really helpful to have a food families reference.
I created this twenty-page food family table for myself and other allergy sufferers/parents. It is far more comprehensive than any other I was able to find on the web or in any book. If you are struggling to find foods that you can eat, it might just give you a few more ideas!