I'm not a fan of factory packaged jerky meat for survival rations, high in sodium, low in food value... If you jerk your own in the sun or even in the heat of your oven at home it retains a lot of its food value and wont speed along dehydration (if you don't add the salt when you do it).

Someone mentioned pemmican somewhere in this thread.. If they hadn't, I would have.

I learned how to make both out of a friends copy of The Indian Tipi: Its History, Construction, and Use by Reginald & Gladys Laubin; it also tells how to make brain tan hides and parfleche (rawhide), some furniture.. basically anything you would need to make to live in a tipi full time, in the way the natives made them and how they lived in them, as well as tips on how to do just that. I bought the book just to have as a refrence in my library.