by G. F. D. Duff. by L. F. Woodruff. by W. E. B. du Bois. by D. W. Rudorff. by H. S. Hoff. by S. E. Rusinoff. by R. C. Sherriff. edited by M. J. B. Duff. by Gerald Duff. by R. W. Moncrieff.