 is Hiking Hot Springs in the Pacific Northwest by Sally Williams and Evie Linton. The sixth edition will be available in October. If you can't wait, you can always get the fifth edition now, but you'll want to get the sixth edition in October because it has 13 new destinations to include details about these hot springs hikes in Yellowstone National Park. So come October, just go to the Falcon Guide's website. That's who publishes this book.