E- böcker om survivalism?

Undrar om ni vet några sidor med gratis E-böcker som handlar om survivalism eller preppning.
Själv hittade jag dessa:
https://www.free-ebooks.net/ebook/Preppers-Checklist-and-a-Basic-Survival-Guide-for-any-Emergency
https://www.free-ebooks.net/ebook/Bug-Out-Bag-Bug-Out-Bag-List-Survival-Gear-You-Must-Have-For-Emergency-Preparedness
https://www.free-ebooks.net/ebook/How-to-Survive-any-Natural-Calamity
Själv hittade jag dessa:
https://www.free-ebooks.net/ebook/Preppers-Checklist-and-a-Basic-Survival-Guide-for-any-Emergency
https://www.free-ebooks.net/ebook/Bug-Out-Bag-Bug-Out-Bag-List-Survival-Gear-You-Must-Have-For-Emergency-Preparedness
https://www.free-ebooks.net/ebook/How-to-Survive-any-Natural-Calamity