Depends on the type of disaster and what your goal is. Assuming some kind of nuclear apocalypse and you want to rebuild, a bunch of survival info, basic engine

Depends on the type of disaster and what your goal is. Assuming some kind of nuclear apocalypse and you want to rebuild, a bunch of survival info, basic engineering instruction you or a small group could execute, and encyclopedias would be valuable. But most importantly, the vast majority of your storage space should be for batteries.