The core content for most wilderness first aid courses is pretty similar. Although they use different texts, most of them are very similar, and most texts are pretty well written. (I helped write the Red Cross text, so I'm kind of partial towards it). The differences between courses and course providers generally are in cost, presentation, and instructor experience and knowledge. Last time I looked, more than a dozen organizations offered wilderness first aid courses. They tend to fall into two categories.
The largest and best know wilderness medicine course providers include Wildern