doi:10.7916/d8-bn4k-hw58Memorandum from Horace R. Cayton to Gunnar Myrdal regarding "Material Available in the Study of the Negro in Chicago," May 17, 1939Cayton, Horace R. (Horace Roscoe), 1903-1970correspondencetextSocial sciences--Research--PlanningSocial sciences--MethodologyAfrican Americans--ResearchChicago (Ill.)Johnson, Guy Benton, 1901-1991Wirth, Louis, 1897-1952Wilkerson, Doxey Alphonso, 1905-1993Raper, Arthur Franklin, 1899-1979