Scope and Contents As new Secretary of the Irish Playwrights Association you should know that I hold the sole performance rights to O' Casey's Juno..., Plough,.., and Shadow..., and will not allow any other performances (agreement of January 25, 1929). J.J. Hayes.On elaborate touring-company letterhead beginning "Arthur Sinclair and Maire O'Neill in Sean O'Casey's Great Plays..." Managers: Robert Arthur, Fred Sinclair, Tony Quinn, Joseph Mitchell, Haldane Crichton. Next week: Prince of Wales...