(1) Homo Hierarchicus: The Caste System and Its Implications Dumont, Louis ISBN: 9780226169637 University of Chicago Press View at publisher
(2) Booker T. Washington Papers Volume 10: 1909-11. Assistant editors, Geraldine McTigue and Nan E. Woodruff Booker T. Washington ISBN: 9780252008009 University of Illinois Press View at publisher
(3) Booker T. Washington Papers Volume 11: 1911-12. Assistant editor, Geraldine McTigue Booker T. Washington ISBN: 9780252008870 University of Illinois Press View at publisher