When it comes to preparedness, we often focus on food, water, tools, shelter, and equipment. But there’s another resource that deserves a place in every serious preparedness library: knowledge.

Thomas J. Glover’s Pocket Ref is the kind of reference book you want to have on hand when access to the internet, modern services, and readily available expertise are no longer guaranteed.

This compact reference is packed with practical information covering a wide range of subjects, including mathematics, mechanics, electricity, plumbing, construction, materials, fasteners, tools, welding,…