"'Close Ranks': Major Joel E. Spingarn and the Two Souls of Dr. W. E. B. Du Bois" was a part of a larger study of the development of radicalism among Afro-Americans during the second and third decades of the present century.
Allen, Ernest Jr.
""CLOSE RANKS": MAJOR JOEL E. SPINGARN AND THE TWO SOULS OF DR. W. E. B. DU BOIS,"
Contributions in Black Studies: Vol. 3
, Article 4.
Available at: http://scholarworks.umass.edu/cibs/vol3/iss1/4