This recounts the events from 1805, when the first "white men" discovered some of Yellowstone's wonders, to the late 1870s, a few years after President Ulysses S. Grant designated the land as America's first national park. Much of the narrative focused on the troubles between various people groups in the region (trappers and traders, official explorers, Army soldiers, Indians, and Mormon pioneers), and a whole section dealt with the settling of small towns in Montana, just north of the current northern park entrances. While some of the details of those events felt a little tedious and perhaps irrelevant, it was generally helpful to see how they shaped and led to the park's formation. It also followed the journeys of several official exploratory parties, with names recognizable by any Yellowstone visitor (Hayden, Washburn, Moran, Everts), and explained the stories of how some major landmarks got their names (Old Faithful, West Thumb, Dragon's Mouth Spring). I expected it to delve more into the actual planning of Yellowstone's boundaries and roadways (why a figure-8 road? why place the entrances where they are?), and perhaps go beyond the first few years to explain the Army's management of the park; as long as it was, it felt like some relevant information was overlooked. But overall it was an interesting book, written in an enjoyable style, and I'm glad I took the time to read it!