by (United States)Ashley Bryan;by (United States)V.Ray Cardozier; by (United States)Ben Bova;by (United States)V.J.Schaefer; by (United States)Allan Carpenter;by (United States)Allann Carpenter; by (United States)C.Bryant;by (United States)K.C.Catchpole; by (United States)H-G.Elias;by (United States)V.R.Gowariker; by (United States)L.Bolinger;by (United States)David Carroll; by (United States)R.Gordon;by (United States)V.S.Groza; by (United States)S.Kassouf;by (United States)V.J.Rayward; by (United States)A.E.Wier;by (United States)A.E.Wier; by (United States)Arthur G.B.;by (United States)Richard F.F.;