Concerninf the theatre in the Middle Ages, sets, plans for cycle plays, theatre and arts...., I hope these writings will be useful: Glynne Wickman, "A History of the Theare". Cambridge, C.U.P. 1985. Roberts, Vera Monry, "On Stage. A History of Theatre". New York, Harper & Row, 1974. Brockett, Oscar G. "History of Theatre". Boston, Allyn & Bacon, 1968. Ruff, Loren K. and Walter R. Stump. "Imitation: The Art of the Theatre". Winston-Salem, N. Ca., Hunter Pub Co., 1979. Claire Labrecque, H. art médieval U.Laval, Quebec. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%