4Woodrow Wilson, "The Significance of American History,"in The Papers of Woodrow Wilson, Vol. 12 (1900 - 1902), 1972, p. 183.
5Harper's Encyclopaedia of United States History, New York, 1902. Vol. Ⅰ, pp. xxvii -xxxii.
6Theodore Roosevelt, Works: Presidential Addresses and State Papers, Part 2, Vol. 14, Statesman Edition, New York: Review of Reviews Co. , 1904, p. 510.
7John R. Commons,“ Racial Composition of the American People: Amalgamation and Assimilation,” in Chautauqua 39 (May 1904) ,p. 218.
8Willa Cather, My antonia, Boston: Houghton Mifflin, 1954, p. 347,
9Murray Newton Rothbard, America's Great Depression, Princeton, N.J. : Van Nostrand Co. , 1963, p. 93.
10H. L. Mencken, "Chiefly Americans," in Smart Set 63 ( December 1920), p. 140.
