1. The Bible (with Hebrew & Greek translations included)
2. The Complete Works of Ayn Rand
3. I don't actually know the name of the series, but you can find them in old bookstores in Berkeley. Written in 1960's & '70's on like how to make clothes, build a cabin, skin a deer, etc for when civilization collapses.
4. The Complete Works of C.S. Lewis
5. The Power of Positive Thinking by N.V. Peale