by (United States)David R.Shaffer;by (United States)A.J.Meadows; by (United States)David A.Ucko;by (United States)A.J.Dunning; by (United States)David Kroenke;by (United States)J.R.Stewart; by (United States)David S.Saxon;by (United States)Norma gaffron; by (United States)David Himmelfarb;by (United States)G.T.Milkovich; by (United States)David Olive;by (United States)Leo Hall; by (United States)David G.Myers;by (United States)ML.C.McDonald; by (United States)David C.Colander;by (United States)David C.Colander; by (United States)David A.C.;by (United States)Doris P.; by (United States)David B.;by (United States)Don A.;