Author :
R.B. Wilkinson;R.S. Brown;B.G.L. Jackman;A. Eustace; Cook;R.E. Mills; Wilkinson;R. Jenks;J. Lowther; Gilpin;T.W. Elkington; Green;C.G. Warren-Boulton;G.W. Wright;E. Fedder;P.H.C. Waddington;L.R. Beesly; Gordon;F.A. Martin;S. Downie;P.B. Higgins;J. Parting