Wilderness 911 takes all backcountry travelers from the basics of first aid to more advanced wilderness medicine with straightforward, step-by-step instructions. For situations when aid-givers don't have the proper supplies, this guide teaches creative and medically sound problem-solving for emergency situations. The easy-to-follow format walks you through "Signs and Symptoms" and "Treatment," and notes "When to Worry" signs for a broad spectrum of medical emergencies. "Tricks of the Trade" sidebars offer improvisational techniques, such as closing wounds with dental floss, hair, or duct tape; treating burns or creating an airtight dressing with honey and plastic wrap; relieving mouth bleeding with a tea bag, and many more.
This was the only text required for my Wilderness First Responder course of yore, and it's on my very, very short list of absolutely-must-have books. It's a great reference when you're too poor for an unnecessary hospital trip, and you have to assess whether you need definitive emergency care or not.