We have found 2 really great websites that we highly recommend. They have very extensive food lists and are a huge benefit while planning your grocery list.
www.glutenfreeinfo.com
www.liveglutenfreeley.com
Of course all fresh fruit and fresh vegetables are gluten free.
Fresh meat is considered gluten free, however I have just recently found out that some manufacturers inject preservatives and fillers in some meats to enhance the color and shelf life and we are currently researching this.
Ok I found a site that certifies all meat products to be gluten free, they have beef and lamb. I am still searching for the perfect chicken.
http://www.rockymtncuts.com/catalog/index.php