Thanks everyone.I only remember the first one.An American diplomat is kidnapped and taken to another Earth.He is needed to cotact the dictator on ANOTHER earth where Germany won WW1 and begin negotiations.The home base is in Stockholm.Believe, Diamond, that the English royal family and some other family merged-possibly the German Hanover House.The novel ends when out hero wins out.He also kills a traitor in the mist of the government which includes a Hermann Goering and a Baron von Richtofen.The second -I believe involves efforts of a nasty group called the Hagroon and their attempt to wipe out other Earths.As I said, my memory is spotty on the Second Book and maybe someone can clear it up.Diamond?Thanks.