Richard White, Professor of History at the University of Washington, is one of the country's leading environmental historians. He is the author of Land Use, Environment, and Social Change: The Shaping of Island County, Washington; The Roots of Dependency: Subsistence, Environment, and Social Change Among the Choctaws, Pawnees, and Navajos; and the prize-winning The Middle Ground: Indians, Empires, and Republics in the Great Lakes Region, 1650-1815. His lecture, "Thinking with Nature: Walt Disney & the Natural World," is from a book in progress to be titled Nature's Nation.