Huge list of manuals covering almost anything you can think of.
There are manual on sawmills and logging, plumbing and pipe-fitting, medical manuals and many many other topics.
This is a great list and they are all downloadable pdfs.
Listing of US Army Field Manuals – Huge List
http://www.enlisted.info/field-manuals/
SAS Survival Handbook, Revised Edition: For Any Climate, in Any Situation
How to Survive the End of the World as We Know It: Tactics, Techniques, and Technologies for Uncertain Times
The Ultimate Survival Manual (Outdoor Life): 333 Skills that Will Get You Out Alive