More Free Online Resources

Marine Corps Manuals
http://www.theusmarines.com/category/usmc-manuals/

Military Manuals
http://www.stevespages.com/page7c.htm

Service (repair, not military) Manuals for just about everything.
http://www.eserviceinfo.com/index.php?what=search2

Electronics:
http://www.tpub.com/neets/

Mathmatics:
http://www.tpub.com/content/math/

Corpsman / Dentalman:
http://www.tpub.com/content/medical/

Metalworking and engines.
http://www.lindsaybks.com/

USDA Complete Guide to Home Canning, 2009 revision
http://www.uga.edu/nchfp/publications/publications_usda.html

Random Manuals.
http://www.hesperian.org/publications_download.php