Page 6: Courtesy of The New York Public Library.
Page 8: Wood engraving by Matthew B. Brady, 1867. Photo courtesy of Library of Congress.
Page 13: Monograph series no. 401: Atlas of the Historical Geography of the U.S. 1932 by Charles O. Paullin. Courtesy of Carnegie Institution of Washington.
Page 27: Photo from Bain News Service, c. 1909. Courtesy of Library of Congress.
Page 28: Granger Historical Picture Archive.
Page 30: The Great Race for the Western Stakes 1870, first published by Currier & Ives. Courtesy of Library of Congress.
Page 37: East and West Shaking Hands at Laying Last Rail by Andrew Russell. Courtesy of the Beinecke Rare Book and Manuscript Library, Yale University.
Page 40: Photo taken by Edward Steichen, c. 1903. Courtesy of Library of Congress.
Page 72: Photo from Jay Cooke: Financier of the Civil War by Ellis Paxson Oberholtzer (Philadelphia: G. W. Jacobs & Co., 1907).
Page 133: Photo from Bain News Service, 1908. Courtesy of Library of Congress.
Page 144: Photo from Bain News Service, c. 1900. Courtesy of Library of Congress.
Page 148: Photo from Investors’ Supplement of the Commercial & Financial Chronicle, Vol. L (William B. Dana & Co. Publishers, May 31, 1890).
Page 161: Courtesy of Library of Congress.
Page 189: Photo from Bain News Service, c. 1915–20. Courtesy of Library of Congress.
Page 204: Courtesy of Wyoming State Archives Photo Collection, Sub Neg 19324 deriv.
Page 215: Photo taken by Carleton Watkins, c. 1870–75. Courtesy of the Open Content Program of The J. Paul Getty Trust.
Page 217: Courtesy of Chicago History Museum; ICHi-021195.
Page 237: Courtesy of Smithsonian Institution Archives.
Page 250: The Curse of California by George Frederick Keller, tinted lithograph, first appeared on pp. 520–521 of The Wasp, vol. 9., no. 316, published August 19, 1882.
Page 253: Map of the Lucin Cut-Off from The Century Illustrated Monthly Magazine, vol. LXXI (The Century Co., 1905–1906).
Page 263: Courtesy of Library of Congress.
Page 266: Photo taken by the Pach Brothers, 1902. Courtesy of Minnesota Historical Society.
Page 285: Photo taken by Geo. C. Boldt, c. 1902. Courtesy of Library of Congress.
Page 330: Photo from Montauk Photo Concern, c. 1910. Courtesy of Library of Congress.
Page 351: The poor man’s candidate by Samuel D. Ehrhart from Puck, vol. 56, no. 1437 (J. Ottmann Lith. Co., Sept. 14, 1904). Courtesy of Library of Congress.
Page 354: Photo courtesy of the archival website of Salton Sea Museum.
Page 357: Photo from Bain News Service, c. 1900. Courtesy of Library of Congress.