Acknowledgements for Thumbnail Images in the Table of Contents, Volume 2

Chapter 17: Smithsonian American Art Museum, Washington, D.C./Art Resource, NY.

Chapter 18: Library of Congress.

Chapter 19: Picture Research Consultants Š Archives.

Chapter 20: Chicago History Museum.

Chapter 21: Chicago History Museum.

Chapter 22: National Archives.

Chapter 23: The Granger Collection, New York.

Chapter 24: Library of Congress.

Chapter 25: Photo by PhotoQuest/Getty Images.

Chapter 26: Collection of Charles H. Christensen.

Chapter 27: Bettmann/Corbis BE042857.

Chapter 28: © Bob Adelman.

Chapter 29: Larry Burrows.

Chapter 30: Dirck Halstead/Getty Images.

Chapter 31: Imagine China via AP Images.