GEORGE BLACK is the author of The Trout Pool Paradox and Casting a Spell. He is the executive editor of OnEarth magazine, a publication of the Natural Resources Defense Council. He lives in New York.

"George Black has written a masterful and riveting history of the exploration of Yellowstone. Empire of Shadows will forever change our understanding and conception of this sacred American place." --David Grann, author of The Lost City of Z

"In this work of meticulous scholarship harnessed to fine story-telling, George Black rediscovers the history and lore of one of the planet's most magnificent landscapes. Here is Yellowstone in all its untouristed grandeur--we can almost smell the musk of buffalo herds and the glurp of the hot springs. Read Empire of the Shadows, and you'll never think of our first--in many ways our greatest--national park in the same way again." --Hampton Sides, author of Blood and Thunder

"A well-researched and dynamically written study of the hidden history of greed and idealism, beauty and violence, which led to the creation of Yellowstone National Park." --Richard Slotkin, author of Gunfighter Nation: The Myth of the Frontier in 20th Century America and Professor Emeritus of American Studies, Wesleyan University

"An engrossing chronicle of the vast sweep of western American history that, after six decades, finally closed in on our first national park." --Robert M. Utley, Former Chief Historian of the National Park Service and author of sixteen books on western American history