The WMS Practice Guidelines for Wilderness Emergency Care were originally published in 1987 and updated five times by 2006 in a chapter-based book format to provide WMS members with an “official statement” of the best methods of handling wilderness related trauma, environmental illnesses, and managing medical problems in the wilderness. While a valuable source of practical information to WMS members, as the book was coming up for revision in 2007, the WMS decided to move towards a more evidence-based, expert panel driven consensus of clinical practice guidelines that could be referenced in the medical literature as well as accessed by those outside of the society. Many of these guidelines have since been updated or supplemented to reflect the latest research (2014 + 2019 updates are included).