[268] DuBois, The Souls of Black Folk, p. 58.
[269] Thomas, The American Negro, p. 268.
[270] Ibid. p. 141.
[271] Ibid. p. 75.
[272] Stone, The American Race Problem, p. 397.
[273] Ibid. p. 398.
[274] DuBois, The Philadelphia Negro, pp. 366-358-359.
[275] Thomas, The American Negro, pp. 408-410.
[276] Ibid. p. 280.
[277] Ibid. p. 281.