by (United Kingdom)W.E.Duckworth;by (United States)R.Naroll; by (United Kingdom)E.A.V.Ebsworth;by (United States)W.Huckel; by (United Kingdom)R.N.Haward;by (United States)M.Morton; by (United Kingdom)W.E.Parry;by (United States)A.O.Barut; by (United Kingdom)W.Heisenberg;by (United States)D.Larie; by (United Kingdom)A.P.M.Lockwood;by (United States)T.W.Torroy; by (United Kingdom)V.Illingworth;by (United States)J.B.L.Poole; by (United Kingdom)G.Longworth;by (United States)H.Bender; by (United Kingdom)J.E.Rowley;by (United States)R.Stokes; by (United Kingdom)R.J.Leigh;by (United States)R.Larsen;