The Piers Plowman Controversy No. 139b. Piers Plowman the Work of One Or of Five. Dr. J.J. Jusserand's First Reply to Prof. Manly ... No. 139c. Professor J.M. Manly's Answer to Dr. J.J. Jusserand ... No. 139d. Dr. Jusserand's Second Reply to Prof. Manly ... No. 139e. The Authorship of Piers Plowman