Who is Horace Bumstead from the book, W. E. B. Du Bois, 1868-1919: Biography of a Race?

After Du Bois blasted the Tuskegee Machine for using blacks as clubs to keep white laborers from asking for too many rights, he started gettin help and suppor from Clarence Darrow, Horace Bumstead, Susan Warton and other prominent people.Horace Bumstead of Atlanta University invited Du Bois to his university.