FM 21-76: US Army Survival Manual

I found a pretty cool online book today:
US Army Survival Manual FM 21-76
http://www.equipped.com/fm21-76.htm

It covers everything from navigation in a wilderness to snake bites to poisonous fishes and shells to eatable plants and other survival stuff.

They have both HTML version of it
http://www.equipped.com/fm3-0570.htm
and a downloadable PDF
http://www.equipped.com/multiservice_ser_manual_1999.pdf

They also have there a separate brochure about poisonous snakes:
http://www.equipped.com/21-76/appe.pdf

A lot of it might be pretty useful for the folks diagnosed with trail running obsession :)