First contact?

This series of books by hugh walters featuring the same characters was the last i read. I used to get them from the library and had a lot of difficulty getting hold of them. It was not dissapointing setting for me the model of how first contact with aliens and the relationship between all the countries of earth should be. The book was as all of mr Walters books full of suspense and excitement (based around a formula of switching context from one scene to another) such that i could hardly put it down, although my fear was always that i would finish it too soon.